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148959149 = 293508393
BaseRepresentation
bin10001110000011…
…10111110101101
3101101021220112112
420320032332231
5301113143044
622440413405
73456063143
oct1070167655
9341256475
10148959149
11770a1239
1241a77265
1324b26211
1415ad7593
15d12609e
hex8e0efad

148959149 has 4 divisors (see below), whose sum is σ = 149467836. Its totient is φ = 148450464.

The previous prime is 148959127. The next prime is 148959169. The reversal of 148959149 is 941959841.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 941959841 = 1078803363.

It can be written as a sum of positive squares in 2 ways, for example, as 117397225 + 31561924 = 10835^2 + 5618^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-148959149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 148959097 and 148959106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148959169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253904 + ... + 254489.

It is an arithmetic number, because the mean of its divisors is an integer number (37366959).

Almost surely, 2148959149 is an apocalyptic number.

It is an amenable number.

148959149 is a deficient number, since it is larger than the sum of its proper divisors (508687).

148959149 is an equidigital number, since it uses as much as digits as its factorization.

148959149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508686.

The product of its digits is 466560, while the sum is 50.

The square root of 148959149 is about 12204.8821788660. The cubic root of 148959149 is about 530.0974651655.

The spelling of 148959149 in words is "one hundred forty-eight million, nine hundred fifty-nine thousand, one hundred forty-nine".

Divisors: 1 293 508393 148959149