89404879 has 2 divisors, whose sum is σ = 89404880. Its totient is φ = 89404878.

The previous prime is 89404859. The next prime is 89404891. The reversal of 89404879 is 97840498.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89404879 - 2¹⁹ = 88880591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89404849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44702439 + 44702440.

It is an arithmetic number, because the mean of its divisors is an integer number (44702440).

Almost surely, 2^89404879 is an apocalyptic number.

89404879 is a deficient number, since it is larger than the sum of its proper divisors (1).

89404879 is an equidigital number, since it uses as much as digits as its factorization.

89404879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 89404879 is about 9455.4153266792. The cubic root of 89404879 is about 447.1505197708.

The spelling of 89404879 in words is "eighty-nine million, four hundred four thousand, eight hundred seventy-nine".