7649879 has 2 divisors, whose sum is σ = 7649880. Its totient is φ = 7649878.

The previous prime is 7649867. The next prime is 7649893. The reversal of 7649879 is 9789467.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7649879 - 2¹² = 7645783 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7649849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3824939 + 3824940.

It is an arithmetic number, because the mean of its divisors is an integer number (3824940).

Almost surely, 2^7649879 is an apocalyptic number.

7649879 is a deficient number, since it is larger than the sum of its proper divisors (1).

7649879 is an equidigital number, since it uses as much as digits as its factorization.

7649879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 50.

The square root of 7649879 is about 2765.8414632802. The cubic root of 7649879 is about 197.0386947619.

The spelling of 7649879 in words is "seven million, six hundred forty-nine thousand, eight hundred seventy-nine".