8391960 has 48 divisors (see below), whose sum is σ = 27275040. Its totient is φ = 2237760.

The previous prime is 8391959. The next prime is 8391997. The reversal of 8391960 is 691938.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11296 + ... + 12015.

It is an arithmetic number, because the mean of its divisors is an integer number (568230).

Almost surely, 2^8391960 is an apocalyptic number.

It is an amenable number.

8391960 is an abundant number, since it is smaller than the sum of its proper divisors (18883080).

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

8391960 is a wasteful number, since it uses less digits than its factorization.

8391960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23328 (or 23321 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 8391960 is about 2896.8879854078. The cubic root of 8391960 is about 203.2143948924.

The spelling of 8391960 in words is "eight million, three hundred ninety-one thousand, nine hundred sixty".