7949642 has 16 divisors (see below), whose sum is σ = 12836232. Its totient is φ = 3678720.

The previous prime is 7949639. The next prime is 7949647. The reversal of 7949642 is 2469497.

It can be written as a sum of positive squares in 4 ways, for example, as 4669921 + 3279721 = 2161^2 + 1811^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7949642.

It is not an unprimeable number, because it can be changed into a prime (7949647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158 + ... + 3990.

Almost surely, 2^7949642 is an apocalyptic number.

7949642 is a deficient number, since it is larger than the sum of its proper divisors (4886590).

7949642 is a wasteful number, since it uses less digits than its factorization.

7949642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3913.

The product of its digits is 108864, while the sum is 41.

The square root of 7949642 is about 2819.5109505019. The cubic root of 7949642 is about 199.5794663771.

The spelling of 7949642 in words is "seven million, nine hundred forty-nine thousand, six hundred forty-two".