82986457 has 2 divisors, whose sum is σ = 82986458. Its totient is φ = 82986456.

The previous prime is 82986439. The next prime is 82986467. The reversal of 82986457 is 75468928.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41718681 + 41267776 = 6459^2 + 6424^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82986457 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82986457.

It is not a weakly prime, because it can be changed into another prime (82986427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41493228 + 41493229.

It is an arithmetic number, because the mean of its divisors is an integer number (41493229).

Almost surely, 2^82986457 is an apocalyptic number.

It is an amenable number.

82986457 is a deficient number, since it is larger than the sum of its proper divisors (1).

82986457 is an equidigital number, since it uses as much as digits as its factorization.

82986457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 49.

The square root of 82986457 is about 9109.6902801358. The cubic root of 82986457 is about 436.1833407453.

It can be divided in two parts, 829864 and 57, that added together give a square (829921 = 911²).

The spelling of 82986457 in words is "eighty-two million, nine hundred eighty-six thousand, four hundred fifty-seven".