89780812 has 12 divisors (see below), whose sum is σ = 171399816. Its totient is φ = 40809440.

The previous prime is 89780807. The next prime is 89780813. The reversal of 89780812 is 21808798.

It is not an unprimeable number, because it can be changed into a prime (89780813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1020193 + ... + 1020280.

It is an arithmetic number, because the mean of its divisors is an integer number (14283318).

Almost surely, 2^89780812 is an apocalyptic number.

It is an amenable number.

89780812 is a deficient number, since it is larger than the sum of its proper divisors (81619004).

89780812 is a wasteful number, since it uses less digits than its factorization.

89780812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040488 (or 2040486 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 43.

The square root of 89780812 is about 9475.2737163630. The cubic root of 89780812 is about 447.7763751600.

The spelling of 89780812 in words is "eighty-nine million, seven hundred eighty thousand, eight hundred twelve".