80889631 has 6 divisors (see below), whose sum is σ = 85371432. Its totient is φ = 76631940.

The previous prime is 80889619. The next prime is 80889691. The reversal of 80889631 is 13698808.

It is a happy number.

It is not a de Polignac number, because 80889631 - 2⁹ = 80889119 is a prime.

It is a super-2 number, since 2×80889631² = 13086264806632322, 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 (80889691) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111675 + ... + 112396.

It is an arithmetic number, because the mean of its divisors is an integer number (14228572).

Almost surely, 2^80889631 is an apocalyptic number.

80889631 is a deficient number, since it is larger than the sum of its proper divisors (4481801).

80889631 is a wasteful number, since it uses less digits than its factorization.

80889631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224109 (or 224090 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 80889631 is about 8993.8662987616. The cubic root of 80889631 is about 432.4782636898.

The spelling of 80889631 in words is "eighty million, eight hundred eighty-nine thousand, six hundred thirty-one".