89420939 has 2 divisors, whose sum is σ = 89420940. Its totient is φ = 89420938.

The previous prime is 89420927. The next prime is 89420977. The reversal of 89420939 is 93902498.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89420939 - 2⁴ = 89420923 is a prime.

It is a super-2 number, since 2×89420939² = 15992208663283442, which contains 22 as substring.

It is a Sophie Germain 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 89420939.

It is not a weakly prime, because it can be changed into another prime (89420909) 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, 44710469 + 44710470.

It is an arithmetic number, because the mean of its divisors is an integer number (44710470).

Almost surely, 2^89420939 is an apocalyptic number.

89420939 is a deficient number, since it is larger than the sum of its proper divisors (1).

89420939 is an equidigital number, since it uses as much as digits as its factorization.

89420939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 89420939 is about 9456.2645373319. The cubic root of 89420939 is about 447.1772923864.

The spelling of 89420939 in words is "eighty-nine million, four hundred twenty thousand, nine hundred thirty-nine".