82980891 has 12 divisors (see below), whose sum is σ = 136984432. Its totient is φ = 47417616.

The previous prime is 82980883. The next prime is 82980943. The reversal of 82980891 is 19808928.

It is not a de Polignac number, because 82980891 - 2³ = 82980883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82980871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 658516 + ... + 658641.

Almost surely, 2^82980891 is an apocalyptic number.

82980891 is a deficient number, since it is larger than the sum of its proper divisors (54003541).

82980891 is a wasteful number, since it uses less digits than its factorization.

82980891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317170 (or 1317167 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 45.

The square root of 82980891 is about 9109.3847761526. The cubic root of 82980891 is about 436.1735887494.

The spelling of 82980891 in words is "eighty-two million, nine hundred eighty thousand, eight hundred ninety-one".