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144499954 = 272249977
BaseRepresentation
bin10001001110011…
…10010011110010
3101001220100200011
420213032103302
5243442444304
622201045134
73403141444
oct1047162362
9331810604
10144499954
1174625a55
12404867aa
1323c24641
1415296494
15ca44c04
hex89ce4f2

144499954 has 4 divisors (see below), whose sum is σ = 216749934. Its totient is φ = 72249976.

The previous prime is 144499951. The next prime is 144499963. The reversal of 144499954 is 459994441.

144499954 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 459994441 = 2861160781.

It can be written as a sum of positive squares in only one way, i.e., 99301225 + 45198729 = 9965^2 + 6723^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 144499898 and 144499907.

It is not an unprimeable number, because it can be changed into a prime (144499951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36124987 + ... + 36124990.

Almost surely, 2144499954 is an apocalyptic number.

144499954 is a deficient number, since it is larger than the sum of its proper divisors (72249980).

144499954 is an equidigital number, since it uses as much as digits as its factorization.

144499954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72249979.

The product of its digits is 933120, while the sum is 49.

The square root of 144499954 is about 12020.8133668234. The cubic root of 144499954 is about 524.7541754655.

The spelling of 144499954 in words is "one hundred forty-four million, four hundred ninety-nine thousand, nine hundred fifty-four".

Divisors: 1 2 72249977 144499954