89169879 has 16 divisors (see below), whose sum is σ = 126731520. Its totient is φ = 55574400.

The previous prime is 89169853. The next prime is 89169893. The reversal of 89169879 is 97896198.

It is not a de Polignac number, because 89169879 - 2¹⁹ = 88645591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89169779) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1912 + ... + 13490.

It is an arithmetic number, because the mean of its divisors is an integer number (7920720).

Almost surely, 2^89169879 is an apocalyptic number.

89169879 is a deficient number, since it is larger than the sum of its proper divisors (37561641).

89169879 is a wasteful number, since it uses less digits than its factorization.

89169879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11750.

The product of its digits is 1959552, while the sum is 57.

The square root of 89169879 is about 9442.9804087481. The cubic root of 89169879 is about 446.7583988349.

The spelling of 89169879 in words is "eighty-nine million, one hundred sixty-nine thousand, eight hundred seventy-nine".