93978 has 24 divisors (see below), whose sum is σ = 213408. Its totient is φ = 29832.

The previous prime is 93971. The next prime is 93979. The reversal of 93978 is 87939.

It is not an unprimeable number, because it can be changed into a prime (93971) 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, 301 + ... + 527.

It is an arithmetic number, because the mean of its divisors is an integer number (8892).

2⁹³⁹⁷⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 93978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106704).

93978 is an abundant number, since it is smaller than the sum of its proper divisors (119430).

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

93978 is a wasteful number, since it uses less digits than its factorization.

93978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258 (or 255 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 93978 is about 306.5583141916. The cubic root of 93978 is about 45.4648119840.

The spelling of 93978 in words is "ninety-three thousand, nine hundred seventy-eight".