222948979397 has 4 divisors (see below), whose sum is σ = 222957190956. Its totient is φ = 222940767840.

The previous prime is 222948979289. The next prime is 222948979417. The reversal of 222948979397 is 793979849222.

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 177181223041 + 45767756356 = 420929^2 + 213934^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222948979397 is a prime.

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 222948979397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222948979597) 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, 4064918 + ... + 4119399.

It is an arithmetic number, because the mean of its divisors is an integer number (55739297739).

Almost surely, 2^222948979397 is an apocalyptic number.

It is an amenable number.

222948979397 is a deficient number, since it is larger than the sum of its proper divisors (8211559).

222948979397 is an equidigital number, since it uses as much as digits as its factorization.

222948979397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8211558.

The product of its digits is 246903552, while the sum is 71.

The spelling of 222948979397 in words is "two hundred twenty-two billion, nine hundred forty-eight million, nine hundred seventy-nine thousand, three hundred ninety-seven".