82990791 has 32 divisors (see below), whose sum is σ = 133775040. Its totient is φ = 50544000.

The previous prime is 82990771. The next prime is 82990793. The reversal of 82990791 is 19709928.

It is not a de Polignac number, because 82990791 - 2⁵ = 82990759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82990793) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34281 + ... + 36621.

It is an arithmetic number, because the mean of its divisors is an integer number (4180470).

Almost surely, 2^82990791 is an apocalyptic number.

82990791 is a deficient number, since it is larger than the sum of its proper divisors (50784249).

82990791 is a wasteful number, since it uses less digits than its factorization.

82990791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2464 (or 2458 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 82990791 is about 9109.9281555894. The cubic root of 82990791 is about 436.1909338947.

The spelling of 82990791 in words is "eighty-two million, nine hundred ninety thousand, seven hundred ninety-one".