7907972 has 6 divisors (see below), whose sum is σ = 13838958. Its totient is φ = 3953984.

The previous prime is 7907959. The next prime is 7907983. The reversal of 7907972 is 2797097.

It is a happy number.

7907972 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 4866436 + 3041536 = 2206^2 + 1744^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 988493 + ... + 988500.

It is an arithmetic number, because the mean of its divisors is an integer number (2306493).

Almost surely, 2^7907972 is an apocalyptic number.

It is an amenable number.

7907972 is a deficient number, since it is larger than the sum of its proper divisors (5930986).

7907972 is a wasteful number, since it uses less digits than its factorization.

7907972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1976997 (or 1976995 counting only the distinct ones).

The product of its (nonzero) digits is 55566, while the sum is 41.

The square root of 7907972 is about 2812.1116620789. Note that the first 3 decimals coincide. The cubic root of 7907972 is about 199.2301403832.

The spelling of 7907972 in words is "seven million, nine hundred seven thousand, nine hundred seventy-two".