840393672 has 32 divisors (see below), whose sum is σ = 2102038080. Its totient is φ = 279990720.

The previous prime is 840393661. The next prime is 840393707. The reversal of 840393672 is 276393048.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47397 + ... + 62667.

It is an arithmetic number, because the mean of its divisors is an integer number (65688690).

Almost surely, 2^840393672 is an apocalyptic number.

It is an amenable number.

840393672 is an abundant number, since it is smaller than the sum of its proper divisors (1261644408).

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

840393672 is a wasteful number, since it uses less digits than its factorization.

840393672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17573 (or 17569 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 840393672 is about 28989.5441840675. The cubic root of 840393672 is about 943.6861717749.

The spelling of 840393672 in words is "eight hundred forty million, three hundred ninety-three thousand, six hundred seventy-two".