7439990 has 16 divisors (see below), whose sum is σ = 13439952. Its totient is φ = 2965344.

The previous prime is 7439977. The next prime is 7440011. The reversal of 7439990 is 999347.

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, 1997 + ... + 4343.

It is an arithmetic number, because the mean of its divisors is an integer number (839997).

Almost surely, 2^7439990 is an apocalyptic number.

7439990 is a deficient number, since it is larger than the sum of its proper divisors (5999962).

7439990 is a wasteful number, since it uses less digits than its factorization.

7439990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2671.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 7439990 is about 2727.6345063076. The cubic root of 7439990 is about 195.2199140695.

The spelling of 7439990 in words is "seven million, four hundred thirty-nine thousand, nine hundred ninety".