86979953 has 2 divisors, whose sum is σ = 86979954. Its totient is φ = 86979952.

The previous prime is 86979923. The next prime is 86980001. The reversal of 86979953 is 35997968.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83320384 + 3659569 = 9128^2 + 1913^2 .

It is a cyclic number.

It is not a de Polignac number, because 86979953 - 2¹⁸ = 86717809 is a prime.

It is not a weakly prime, because it can be changed into another prime (86979913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43489976 + 43489977.

It is an arithmetic number, because the mean of its divisors is an integer number (43489977).

Almost surely, 2^86979953 is an apocalyptic number.

It is an amenable number.

86979953 is a deficient number, since it is larger than the sum of its proper divisors (1).

86979953 is an equidigital number, since it uses as much as digits as its factorization.

86979953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3674160, while the sum is 56.

The square root of 86979953 is about 9326.3043591768. The cubic root of 86979953 is about 443.0707253742.

The spelling of 86979953 in words is "eighty-six million, nine hundred seventy-nine thousand, nine hundred fifty-three".