82969931 has 4 divisors (see below), whose sum is σ = 90512664. Its totient is φ = 75427200.

The previous prime is 82969921. The next prime is 82969949. The reversal of 82969931 is 13996928.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82969931 - 2⁶ = 82969867 is a prime.

It is a super-2 number, since 2×82969931² = 13768018900289522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82969921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3771350 + ... + 3771371.

It is an arithmetic number, because the mean of its divisors is an integer number (22628166).

Almost surely, 2^82969931 is an apocalyptic number.

82969931 is a deficient number, since it is larger than the sum of its proper divisors (7542733).

82969931 is a wasteful number, since it uses less digits than its factorization.

82969931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7542732.

The product of its digits is 209952, while the sum is 47.

The square root of 82969931 is about 9108.7831788884. The cubic root of 82969931 is about 436.1543848381.

The spelling of 82969931 in words is "eighty-two million, nine hundred sixty-nine thousand, nine hundred thirty-one".