7648939 has 2 divisors, whose sum is σ = 7648940. Its totient is φ = 7648938.

The previous prime is 7648931. The next prime is 7648943. The reversal of 7648939 is 9398467.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7648939 - 2³ = 7648931 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7648931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3824469 + 3824470.

It is an arithmetic number, because the mean of its divisors is an integer number (3824470).

Almost surely, 2^7648939 is an apocalyptic number.

7648939 is a deficient number, since it is larger than the sum of its proper divisors (1).

7648939 is an equidigital number, since it uses as much as digits as its factorization.

7648939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 46.

The square root of 7648939 is about 2765.6715278572. The cubic root of 7648939 is about 197.0306238735.

The spelling of 7648939 in words is "seven million, six hundred forty-eight thousand, nine hundred thirty-nine".