88920857 has 2 divisors, whose sum is σ = 88920858. Its totient is φ = 88920856.

The previous prime is 88920823. The next prime is 88920869. The reversal of 88920857 is 75802988.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83704201 + 5216656 = 9149^2 + 2284^2 .

It is a cyclic number.

It is not a de Polignac number, because 88920857 - 2¹⁶ = 88855321 is a prime.

It is a super-2 number, since 2×88920857² = 15813837619228898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (88925857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44460428 + 44460429.

It is an arithmetic number, because the mean of its divisors is an integer number (44460429).

Almost surely, 2^88920857 is an apocalyptic number.

It is an amenable number.

88920857 is a deficient number, since it is larger than the sum of its proper divisors (1).

88920857 is an equidigital number, since it uses as much as digits as its factorization.

88920857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 322560, while the sum is 47.

The square root of 88920857 is about 9429.7856285284. The cubic root of 88920857 is about 446.3421282430.

The spelling of 88920857 in words is "eighty-eight million, nine hundred twenty thousand, eight hundred fifty-seven".