82979797 has 2 divisors, whose sum is σ = 82979798. Its totient is φ = 82979796.

The previous prime is 82979731. The next prime is 82979833. The reversal of 82979797 is 79797928.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57668836 + 25310961 = 7594^2 + 5031^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82979797 is a prime.

It is a super-2 number, since 2×82979797² = 13771293420322418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82979497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41489898 + 41489899.

It is an arithmetic number, because the mean of its divisors is an integer number (41489899).

Almost surely, 2^82979797 is an apocalyptic number.

It is an amenable number.

82979797 is a deficient number, since it is larger than the sum of its proper divisors (1).

82979797 is an equidigital number, since it uses as much as digits as its factorization.

82979797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4000752, while the sum is 58.

The square root of 82979797 is about 9109.3247279916. The cubic root of 82979797 is about 436.1716719386.

The spelling of 82979797 in words is "eighty-two million, nine hundred seventy-nine thousand, seven hundred ninety-seven".