840315964 has 12 divisors (see below), whose sum is σ = 1547950600. Its totient is φ = 398044368.

The previous prime is 840315953. The next prime is 840315979. The reversal of 840315964 is 469513048.

It is a super-2 number, since 2×840315964² = 1412261838706498592, which contains 22 as substring.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 5528319 + ... + 5528470.

Almost surely, 2^840315964 is an apocalyptic number.

It is an amenable number.

840315964 is a deficient number, since it is larger than the sum of its proper divisors (707634636).

840315964 is a wasteful number, since it uses less digits than its factorization.

840315964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11056812 (or 11056810 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 840315964 is about 28988.2038767496. The cubic root of 840315964 is about 943.6570845238.

The spelling of 840315964 in words is "eight hundred forty million, three hundred fifteen thousand, nine hundred sixty-four".