89725091 has 2 divisors, whose sum is σ = 89725092. Its totient is φ = 89725090.

The previous prime is 89725081. The next prime is 89725117. The reversal of 89725091 is 19052798.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89725091 - 2²⁶ = 22616227 is a prime.

It is not a weakly prime, because it can be changed into another prime (89725061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44862545 + 44862546.

It is an arithmetic number, because the mean of its divisors is an integer number (44862546).

Almost surely, 2^89725091 is an apocalyptic number.

89725091 is a deficient number, since it is larger than the sum of its proper divisors (1).

89725091 is an equidigital number, since it uses as much as digits as its factorization.

89725091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 89725091 is about 9472.3329227810. The cubic root of 89725091 is about 447.6837209490.

The spelling of 89725091 in words is "eighty-nine million, seven hundred twenty-five thousand, ninety-one".