7899442 has 16 divisors (see below), whose sum is σ = 12519360. Its totient is φ = 3730672.

The previous prime is 7899413. The next prime is 7899443. The reversal of 7899442 is 2449987.

It is a super-2 number, since 2×7899442² = 124802367822728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7899443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2784 + ... + 4852.

It is an arithmetic number, because the mean of its divisors is an integer number (782460).

Almost surely, 2^7899442 is an apocalyptic number.

7899442 is a deficient number, since it is larger than the sum of its proper divisors (4619918).

7899442 is a wasteful number, since it uses less digits than its factorization.

7899442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2177.

The product of its digits is 145152, while the sum is 43.

The square root of 7899442 is about 2810.5945990128. The cubic root of 7899442 is about 199.1584808604.

The spelling of 7899442 in words is "seven million, eight hundred ninety-nine thousand, four hundred forty-two".