840634346 has 12 divisors (see below), whose sum is σ = 1272247782. Its totient is φ = 416584896.

The previous prime is 840634297. The next prime is 840634367. The reversal of 840634346 is 643436048.

It can be written as a sum of positive squares in 3 ways, for example, as 226833721 + 613800625 = 15061^2 + 24775^2 .

It is a super-2 number, since 2×840634346² = 1413332207349695432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9080 + ... + 41996.

Almost surely, 2^840634346 is an apocalyptic number.

840634346 is a deficient number, since it is larger than the sum of its proper divisors (431613436).

840634346 is a wasteful number, since it uses less digits than its factorization.

840634346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33145 (or 33032 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 38.

The square root of 840634346 is about 28993.6949352786. The cubic root of 840634346 is about 943.7762482298.

The spelling of 840634346 in words is "eight hundred forty million, six hundred thirty-four thousand, three hundred forty-six".