89778812 has 12 divisors (see below), whose sum is σ = 157859016. Its totient is φ = 44676240.

The previous prime is 89778803. The next prime is 89778841. The reversal of 89778812 is 21887798.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52343 + ... + 54030.

It is an arithmetic number, because the mean of its divisors is an integer number (13154918).

Almost surely, 2^89778812 is an apocalyptic number.

It is an amenable number.

89778812 is a deficient number, since it is larger than the sum of its proper divisors (68080204).

89778812 is a wasteful number, since it uses less digits than its factorization.

89778812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106588 (or 106586 counting only the distinct ones).

The product of its digits is 451584, while the sum is 50.

The square root of 89778812 is about 9475.1681779270. The cubic root of 89778812 is about 447.7730501756.

The spelling of 89778812 in words is "eighty-nine million, seven hundred seventy-eight thousand, eight hundred twelve".