89415977 has 4 divisors (see below), whose sum is σ = 102189696. Its totient is φ = 76642260.

The previous prime is 89415947. The next prime is 89415979. The reversal of 89415977 is 77951498.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77951498 = 2 ⋅38975749.

It is a cyclic number.

It is not a de Polignac number, because 89415977 - 2¹⁰ = 89414953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (89415979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6386849 + ... + 6386862.

It is an arithmetic number, because the mean of its divisors is an integer number (25547424).

Almost surely, 2^89415977 is an apocalyptic number.

It is an amenable number.

89415977 is a deficient number, since it is larger than the sum of its proper divisors (12773719).

89415977 is a wasteful number, since it uses less digits than its factorization.

89415977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12773718.

The product of its digits is 635040, while the sum is 50.

The square root of 89415977 is about 9456.0021679355. The cubic root of 89415977 is about 447.1690208906.

The spelling of 89415977 in words is "eighty-nine million, four hundred fifteen thousand, nine hundred seventy-seven".