7945988 has 6 divisors (see below), whose sum is σ = 13905486. Its totient is φ = 3972992.

The previous prime is 7945981. The next prime is 7946023. The reversal of 7945988 is 8895497.

It can be written as a sum of positive squares in only one way, i.e., 7139584 + 806404 = 2672^2 + 898^2 .

It is a super-2 number, since 2×7945988² = 126277450592288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7945981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 993245 + ... + 993252.

It is an arithmetic number, because the mean of its divisors is an integer number (2317581).

Almost surely, 2^7945988 is an apocalyptic number.

It is an amenable number.

7945988 is a deficient number, since it is larger than the sum of its proper divisors (5959498).

7945988 is a wasteful number, since it uses less digits than its factorization.

7945988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986501 (or 1986499 counting only the distinct ones).

The product of its digits is 725760, while the sum is 50.

The square root of 7945988 is about 2818.8628913092. The cubic root of 7945988 is about 199.5488832334.

The spelling of 7945988 in words is "seven million, nine hundred forty-five thousand, nine hundred eighty-eight".