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149924089 = 721417727
BaseRepresentation
bin10001110111110…
…10100011111001
3101110002221012001
420323322203321
5301340032324
622513221001
73500222320
oct1073724371
9343087161
10149924089
11776a0207
1242261761
13250a34a3
1415ca90b7
15d266e44
hex8efa8f9

149924089 has 4 divisors (see below), whose sum is σ = 171341824. Its totient is φ = 128506356.

The previous prime is 149924087. The next prime is 149924107. The reversal of 149924089 is 980429941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 149924089 - 21 = 149924087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149924087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10708857 + ... + 10708870.

It is an arithmetic number, because the mean of its divisors is an integer number (42835456).

Almost surely, 2149924089 is an apocalyptic number.

It is an amenable number.

149924089 is a deficient number, since it is larger than the sum of its proper divisors (21417735).

149924089 is an equidigital number, since it uses as much as digits as its factorization.

149924089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21417734.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 149924089 is about 12244.3492681318. The cubic root of 149924089 is about 531.2396389398.

The spelling of 149924089 in words is "one hundred forty-nine million, nine hundred twenty-four thousand, eighty-nine".

Divisors: 1 7 21417727 149924089