7879387 has 4 divisors (see below), whose sum is σ = 8151120. Its totient is φ = 7607656.

The previous prime is 7879379. The next prime is 7879393. The reversal of 7879387 is 7839787.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7879387 - 2³ = 7879379 is a prime.

It is a d-powerful number, because it can be written as 7 + 8³ + 7⁵ + 9² + 3³ + 8⁷ + 7⁸ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7879387.

It is not an unprimeable number, because it can be changed into a prime (7879307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135823 + ... + 135880.

It is an arithmetic number, because the mean of its divisors is an integer number (2037780).

Almost surely, 2^7879387 is an apocalyptic number.

7879387 is a deficient number, since it is larger than the sum of its proper divisors (271733).

7879387 is a wasteful number, since it uses less digits than its factorization.

7879387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271732.

The product of its digits is 592704, while the sum is 49.

The square root of 7879387 is about 2807.0245812960. The cubic root of 7879387 is about 198.9897977144.

The spelling of 7879387 in words is "seven million, eight hundred seventy-nine thousand, three hundred eighty-seven".