89725019 has 2 divisors, whose sum is σ = 89725020. Its totient is φ = 89725018.

The previous prime is 89724991. The next prime is 89725039. The reversal of 89725019 is 91052798.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89725019 - 2⁸ = 89724763 is a prime.

It is a super-2 number, since 2×89725019² = 16101158069100722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (89725039) 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, 44862509 + 44862510.

It is an arithmetic number, because the mean of its divisors is an integer number (44862510).

Almost surely, 2^89725019 is an apocalyptic number.

89725019 is a deficient number, since it is larger than the sum of its proper divisors (1).

89725019 is an equidigital number, since it uses as much as digits as its factorization.

89725019 is an odious number, because the sum of its binary digits is odd.

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

The square root of 89725019 is about 9472.3291222381. The cubic root of 89725019 is about 447.6836012009.

The spelling of 89725019 in words is "eighty-nine million, seven hundred twenty-five thousand, nineteen".