89261977 has 24 divisors (see below), whose sum is σ = 107294976. Its totient is φ = 74219712.

The previous prime is 89261969. The next prime is 89261987. The reversal of 89261977 is 77916298.

It is a happy number.

It is not a de Polignac number, because 89261977 - 2³ = 89261969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 89261977.

It is not an unprimeable number, because it can be changed into a prime (89261987) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 789873 + ... + 789985.

It is an arithmetic number, because the mean of its divisors is an integer number (4470624).

Almost surely, 2^89261977 is an apocalyptic number.

It is an amenable number.

89261977 is a deficient number, since it is larger than the sum of its proper divisors (18032999).

89261977 is an frugal number, since it uses more digits than its factorization.

89261977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 167 counting only the distinct ones).

The product of its digits is 381024, while the sum is 49.

The square root of 89261977 is about 9447.8556826404. The cubic root of 89261977 is about 446.9121555296.

The spelling of 89261977 in words is "eighty-nine million, two hundred sixty-one thousand, nine hundred seventy-seven".