7939798 has 4 divisors (see below), whose sum is σ = 11909700. Its totient is φ = 3969898.

The previous prime is 7939787. The next prime is 7939817. The reversal of 7939798 is 8979397.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1984948 + ... + 1984951.

It is an arithmetic number, because the mean of its divisors is an integer number (2977425).

Almost surely, 2^7939798 is an apocalyptic number.

7939798 is a deficient number, since it is larger than the sum of its proper divisors (3969902).

7939798 is a wasteful number, since it uses less digits than its factorization.

7939798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3969901.

The product of its digits is 857304, while the sum is 52.

The square root of 7939798 is about 2817.7647169343. The cubic root of 7939798 is about 199.4970529482.

The spelling of 7939798 in words is "seven million, nine hundred thirty-nine thousand, seven hundred ninety-eight".