840622404 has 12 divisors (see below), whose sum is σ = 1961452304. Its totient is φ = 280207464.

The previous prime is 840622399. The next prime is 840622411. The reversal of 840622404 is 404226048.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×840622404² = 1413292052213478432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35025922 + ... + 35025945.

Almost surely, 2^840622404 is an apocalyptic number.

It is an amenable number.

840622404 is an abundant number, since it is smaller than the sum of its proper divisors (1120829900).

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

840622404 is a wasteful number, since it uses less digits than its factorization.

840622404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70051874 (or 70051872 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 30.

The square root of 840622404 is about 28993.4889932205. The cubic root of 840622404 is about 943.7717791328.

The spelling of 840622404 in words is "eight hundred forty million, six hundred twenty-two thousand, four hundred four".