73889631 has 16 divisors (see below), whose sum is σ = 109912320. Its totient is φ = 49059000.

The previous prime is 73889623. The next prime is 73889657. The reversal of 73889631 is 13698837.

It is a happy number.

73889631 is a `hidden beast` number, since 7 + 3 + 8 + 8 + 9 + 631 = 666.

It is not a de Polignac number, because 73889631 - 2³ = 73889623 is a prime.

It is a super-2 number, since 2×73889631² = 10919355138632322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73889611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1326 + ... + 12228.

It is an arithmetic number, because the mean of its divisors is an integer number (6869520).

Almost surely, 2^73889631 is an apocalyptic number.

73889631 is a deficient number, since it is larger than the sum of its proper divisors (36022689).

73889631 is a wasteful number, since it uses less digits than its factorization.

73889631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11163 (or 11157 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 73889631 is about 8595.9078054619. The cubic root of 73889631 is about 419.6248180145.

The spelling of 73889631 in words is "seventy-three million, eight hundred eighty-nine thousand, six hundred thirty-one".