7994040 has 32 divisors (see below), whose sum is σ = 23982480. Its totient is φ = 2131712.

The previous prime is 7994039. The next prime is 7994059. The reversal of 7994040 is 404997.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7993992 and 7994010.

It is a congruent number.

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, 33189 + ... + 33428.

Almost surely, 2^7994040 is an apocalyptic number.

It is an amenable number.

7994040 is an abundant number, since it is smaller than the sum of its proper divisors (15988440).

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

7994040 is a wasteful number, since it uses less digits than its factorization.

7994040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66631 (or 66627 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 7994040 is about 2827.3733393381. The cubic root of 7994040 is about 199.9503209943.

The spelling of 7994040 in words is "seven million, nine hundred ninety-four thousand, forty".