7879399 has 6 divisors (see below), whose sum is σ = 8660960. Its totient is φ = 7162980.

The previous prime is 7879393. The next prime is 7879411. The reversal of 7879399 is 9939787.

It is not a de Polignac number, because 7879399 - 2⁹ = 7878887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7879393) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32439 + ... + 32680.

Almost surely, 2^7879399 is an apocalyptic number.

7879399 is a deficient number, since it is larger than the sum of its proper divisors (781561).

7879399 is a wasteful number, since it uses less digits than its factorization.

7879399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65141 (or 65130 counting only the distinct ones).

The product of its digits is 857304, while the sum is 52.

The square root of 7879399 is about 2807.0267187898. The cubic root of 7879399 is about 198.9898987322.

The spelling of 7879399 in words is "seven million, eight hundred seventy-nine thousand, three hundred ninety-nine".