7879402756 has 9 divisors (see below), whose sum is σ = 13789265511. Its totient is φ = 3939612612.

The previous prime is 7879402667. The next prime is 7879402759. The reversal of 7879402756 is 6572049787.

The square root of 7879402756 is 88766.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7879402697 and 7879402706.

It is not an unprimeable number, because it can be changed into a prime (7879402759) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 155341 + ... + 199723.

Almost surely, 2^7879402756 is an apocalyptic number.

7879402756 is the 88766-th square number.

It is an amenable number.

7879402756 is a deficient number, since it is larger than the sum of its proper divisors (5909862755).

7879402756 is an frugal number, since it uses more digits than its factorization.

7879402756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88770 (or 44385 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 55.

The cubic root of 7879402756 is about 1989.8993035080.

The spelling of 7879402756 in words is "seven billion, eight hundred seventy-nine million, four hundred two thousand, seven hundred fifty-six".