89145479 has 2 divisors, whose sum is σ = 89145480. Its totient is φ = 89145478.

The previous prime is 89145437. The next prime is 89145499. The reversal of 89145479 is 97454198.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89145479 - 2⁸ = 89145223 is a prime.

It is a super-2 number, since 2×89145479² = 15893832852278882, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89145409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44572739 + 44572740.

It is an arithmetic number, because the mean of its divisors is an integer number (44572740).

Almost surely, 2^89145479 is an apocalyptic number.

89145479 is a deficient number, since it is larger than the sum of its proper divisors (1).

89145479 is an equidigital number, since it uses as much as digits as its factorization.

89145479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 47.

The square root of 89145479 is about 9441.6883553737. The cubic root of 89145479 is about 446.7176455391.

The spelling of 89145479 in words is "eighty-nine million, one hundred forty-five thousand, four hundred seventy-nine".