89067978 has 32 divisors (see below), whose sum is σ = 198806400. Its totient is φ = 29557728.

The previous prime is 89067967. The next prime is 89067989. The reversal of 89067978 is 87976098.

It is an interprime number because it is at equal distance from previous prime (89067967) and next prime (89067989).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9043 + ... + 16121.

It is an arithmetic number, because the mean of its divisors is an integer number (6212700).

Almost surely, 2^89067978 is an apocalyptic number.

89067978 is an abundant number, since it is smaller than the sum of its proper divisors (109738422).

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

89067978 is a wasteful number, since it uses less digits than its factorization.

89067978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7323 (or 7317 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The square root of 89067978 is about 9437.5832711558. The cubic root of 89067978 is about 446.5881527056.

The spelling of 89067978 in words is "eighty-nine million, sixty-seven thousand, nine hundred seventy-eight".