89661400 has 48 divisors (see below), whose sum is σ = 220733640. Its totient is φ = 33753600.

The previous prime is 89661379. The next prime is 89661401. The reversal of 89661400 is 416698.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89661401) 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, 9786 + ... + 16585.

Almost surely, 2^89661400 is an apocalyptic number.

It is an amenable number.

89661400 is an abundant number, since it is smaller than the sum of its proper divisors (131072240).

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

89661400 is a wasteful number, since it uses less digits than its factorization.

89661400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26404 (or 26395 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 89661400 is about 9468.9703769734. The cubic root of 89661400 is about 447.5777670368.

The spelling of 89661400 in words is "eighty-nine million, six hundred sixty-one thousand, four hundred".