222979513 has 4 divisors (see below), whose sum is σ = 223021540. Its totient is φ = 222937488.

The previous prime is 222979499. The next prime is 222979529. The reversal of 222979513 is 315979222.

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

It can be written as a sum of positive squares in 2 ways, for example, as 57805609 + 165173904 = 7603^2 + 12852^2 .

It is a cyclic number.

It is not a de Polignac number, because 222979513 - 2¹³ = 222971321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222979313) 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, 11670 + ... + 24127.

It is an arithmetic number, because the mean of its divisors is an integer number (55755385).

Almost surely, 2^222979513 is an apocalyptic number.

It is an amenable number.

222979513 is a deficient number, since it is larger than the sum of its proper divisors (42027).

222979513 is an equidigital number, since it uses as much as digits as its factorization.

222979513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42026.

The product of its digits is 68040, while the sum is 40.

The square root of 222979513 is about 14932.4985518164. The cubic root of 222979513 is about 606.3941285128.

The spelling of 222979513 in words is "two hundred twenty-two million, nine hundred seventy-nine thousand, five hundred thirteen".