7279913 has 4 divisors (see below), whose sum is σ = 7292628. Its totient is φ = 7267200.

The previous prime is 7279897. The next prime is 7279931. The reversal of 7279913 is 3199727.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3199727 = 31 ⋅103217.

It can be written as a sum of positive squares in 2 ways, for example, as 4276624 + 3003289 = 2068^2 + 1733^2 .

It is a cyclic number.

It is not a de Polignac number, because 7279913 - 2⁴ = 7279897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7279963) 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, 5456 + ... + 6657.

It is an arithmetic number, because the mean of its divisors is an integer number (1823157).

Almost surely, 2^7279913 is an apocalyptic number.

It is an amenable number.

7279913 is a deficient number, since it is larger than the sum of its proper divisors (12715).

7279913 is a wasteful number, since it uses less digits than its factorization.

7279913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12714.

The product of its digits is 23814, while the sum is 38.

The square root of 7279913 is about 2698.1313904256. The cubic root of 7279913 is about 193.8096496186.

It can be divided in two parts, 7279 and 913, that added together give a 13-th power (8192 = 2¹³).

The spelling of 7279913 in words is "seven million, two hundred seventy-nine thousand, nine hundred thirteen".