86999477 has 2 divisors, whose sum is σ = 86999478. Its totient is φ = 86999476.

The previous prime is 86999467. The next prime is 86999503. The reversal of 86999477 is 77499968.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69072721 + 17926756 = 8311^2 + 4234^2 .

It is a cyclic number.

It is not a de Polignac number, because 86999477 - 2¹⁰ = 86998453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86999467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43499738 + 43499739.

It is an arithmetic number, because the mean of its divisors is an integer number (43499739).

Almost surely, 2^86999477 is an apocalyptic number.

It is an amenable number.

86999477 is a deficient number, since it is larger than the sum of its proper divisors (1).

86999477 is an equidigital number, since it uses as much as digits as its factorization.

86999477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6858432, while the sum is 59.

The square root of 86999477 is about 9327.3510173039. The cubic root of 86999477 is about 443.1038742603.

The spelling of 86999477 in words is "eighty-six million, nine hundred ninety-nine thousand, four hundred seventy-seven".