89491780 has 48 divisors (see below), whose sum is σ = 215470080. Its totient is φ = 30584448.

The previous prime is 89491777. The next prime is 89491813. The reversal of 89491780 is 8719498.

It is a happy number.

89491780 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

89491780 is strictly pandigital in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 89491780.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52786 + ... + 54454.

It is an arithmetic number, because the mean of its divisors is an integer number (4488960).

Almost surely, 2^89491780 is an apocalyptic number.

It is an amenable number.

89491780 is an abundant number, since it is smaller than the sum of its proper divisors (125978300).

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

89491780 is a wasteful number, since it uses less digits than its factorization.

89491780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2068 (or 2066 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 89491780 is about 9460.0095137373. The cubic root of 89491780 is about 447.2953487208.

The spelling of 89491780 in words is "eighty-nine million, four hundred ninety-one thousand, seven hundred eighty".