7979904747 has 12 divisors (see below), whose sum is σ = 11552554104. Its totient is φ = 5307924960.

The previous prime is 7979904731. The next prime is 7979904749. The reversal of 7979904747 is 7474099797.

7979904747 is a `hidden beast` number, since 7 + 9 + 79 + 90 + 474 + 7 = 666.

It is not a de Polignac number, because 7979904747 - 2⁴ = 7979904731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7979904749) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 996754 + ... + 1004727.

It is an arithmetic number, because the mean of its divisors is an integer number (962712842).

Almost surely, 2^7979904747 is an apocalyptic number.

7979904747 is a deficient number, since it is larger than the sum of its proper divisors (3572649357).

7979904747 is a wasteful number, since it uses less digits than its factorization.

7979904747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001930 (or 2001927 counting only the distinct ones).

The product of its (nonzero) digits is 28005264, while the sum is 63.

The square root of 7979904747 is about 89330.3125876094. The cubic root of 7979904747 is about 1998.3239914734.

The spelling of 7979904747 in words is "seven billion, nine hundred seventy-nine million, nine hundred four thousand, seven hundred forty-seven".