156466989 has 12 divisors (see below), whose sum is σ = 258294816. Its totient is φ = 89409672.

The previous prime is 156466987. The next prime is 156467039. The reversal of 156466989 is 989664651.

It is a happy number.

It is not a de Polignac number, because 156466989 - 2¹ = 156466987 is a prime.

It is a super-2 number, since 2×156466989² = 48963837293452242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156466987) 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 11 ways as a sum of consecutive naturals, for example, 1241739 + ... + 1241864.

It is an arithmetic number, because the mean of its divisors is an integer number (21524568).

Almost surely, 2^156466989 is an apocalyptic number.

It is an amenable number.

156466989 is a deficient number, since it is larger than the sum of its proper divisors (101827827).

156466989 is a wasteful number, since it uses less digits than its factorization.

156466989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2483616 (or 2483613 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The square root of 156466989 is about 12508.6765487001. The cubic root of 156466989 is about 538.8578844497.

The spelling of 156466989 in words is "one hundred fifty-six million, four hundred sixty-six thousand, nine hundred eighty-nine".