7915479 has 16 divisors (see below), whose sum is σ = 12399744. Its totient is φ = 4428000.

The previous prime is 7915477. The next prime is 7915487. The reversal of 7915479 is 9745197.

It is a happy number.

It is not a de Polignac number, because 7915479 - 2¹ = 7915477 is a prime.

7915479 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 7915479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7915477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8797 + ... + 9654.

It is an arithmetic number, because the mean of its divisors is an integer number (774984).

Almost surely, 2^7915479 is an apocalyptic number.

7915479 is a deficient number, since it is larger than the sum of its proper divisors (4484265).

7915479 is a wasteful number, since it uses less digits than its factorization.

7915479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18478.

The product of its digits is 79380, while the sum is 42.

The square root of 7915479 is about 2813.4461075343. The cubic root of 7915479 is about 199.2931631848.

The spelling of 7915479 in words is "seven million, nine hundred fifteen thousand, four hundred seventy-nine".