89474778 has 24 divisors (see below), whose sum is σ = 194844000. Its totient is φ = 29673864.

The previous prime is 89474767. The next prime is 89474779. The reversal of 89474778 is 87747498.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (89474779) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8908 + ... + 16071.

It is an arithmetic number, because the mean of its divisors is an integer number (8118500).

Almost surely, 2^89474778 is an apocalyptic number.

89474778 is an abundant number, since it is smaller than the sum of its proper divisors (105369222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89474778 is a wasteful number, since it uses less digits than its factorization.

89474778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25186 (or 25183 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 54.

The square root of 89474778 is about 9459.1108461631. The cubic root of 89474778 is about 447.2670206174.

The spelling of 89474778 in words is "eighty-nine million, four hundred seventy-four thousand, seven hundred seventy-eight".