155679489 has 80 divisors (see below), whose sum is σ = 291050496. Its totient is φ = 80870400.

The previous prime is 155679457. The next prime is 155679527. The reversal of 155679489 is 984976551.

155679489 is a `hidden beast` number, since 1 + 556 + 7 + 9 + 4 + 89 = 666.

It is not a de Polignac number, because 155679489 - 2⁵ = 155679457 is a prime.

It is a super-2 number, since 2×155679489² = 48472206590602242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155679409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 298549 + ... + 299069.

Almost surely, 2^155679489 is an apocalyptic number.

It is an amenable number.

155679489 is a deficient number, since it is larger than the sum of its proper divisors (135371007).

155679489 is a wasteful number, since it uses less digits than its factorization.

155679489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588 (or 579 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 54.

The square root of 155679489 is about 12477.1586909841. The cubic root of 155679489 is about 537.9523377390.

The spelling of 155679489 in words is "one hundred fifty-five million, six hundred seventy-nine thousand, four hundred eighty-nine".