840939264 has 108 divisors (see below), whose sum is σ = 2645136312. Its totient is φ = 254822400.

The previous prime is 840939227. The next prime is 840939283. The reversal of 840939264 is 462939048.

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, 8754 + ... + 41934.

Almost surely, 2^840939264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 840939264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1322568156).

840939264 is an abundant number, since it is smaller than the sum of its proper divisors (1804197048).

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

840939264 is a wasteful number, since it uses less digits than its factorization.

840939264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33214 (or 33197 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 840939264 is about 28998.9528086791. The cubic root of 840939264 is about 943.8903444399.

The spelling of 840939264 in words is "eight hundred forty million, nine hundred thirty-nine thousand, two hundred sixty-four".