74531989 has 12 divisors (see below), whose sum is σ = 88547904. Its totient is φ = 62523384.

The previous prime is 74531981. The next prime is 74531993. The reversal of 74531989 is 98913547.

It is a happy number.

It is not a de Polignac number, because 74531989 - 2³ = 74531981 is a prime.

It is a super-2 number, since 2×74531989² = 11110034768592242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74531981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13879 + ... + 18484.

It is an arithmetic number, because the mean of its divisors is an integer number (7378992).

Almost surely, 2^74531989 is an apocalyptic number.

It is an amenable number.

74531989 is a deficient number, since it is larger than the sum of its proper divisors (14015915).

74531989 is a wasteful number, since it uses less digits than its factorization.

74531989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32424 (or 32417 counting only the distinct ones).

The product of its digits is 272160, while the sum is 46.

The square root of 74531989 is about 8633.1911249549. The cubic root of 74531989 is about 420.8373111105.

The spelling of 74531989 in words is "seventy-four million, five hundred thirty-one thousand, nine hundred eighty-nine".