220979396 has 72 divisors (see below), whose sum is σ = 456085728. Its totient is φ = 93280000.

The previous prime is 220979371. The next prime is 220979399. The reversal of 220979396 is 693979022.

It is a self number, because there is not a number n which added to its sum of digits gives 220979396.

It is not an unprimeable number, because it can be changed into a prime (220979399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 880271 + ... + 880521.

It is an arithmetic number, because the mean of its divisors is an integer number (6334524).

Almost surely, 2^220979396 is an apocalyptic number.

It is an amenable number.

220979396 is an abundant number, since it is smaller than the sum of its proper divisors (235106332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220979396 is a wasteful number, since it uses less digits than its factorization.

220979396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 47.

The square root of 220979396 is about 14865.3757436534. The cubic root of 220979396 is about 604.5755700849.

The spelling of 220979396 in words is "two hundred twenty million, nine hundred seventy-nine thousand, three hundred ninety-six".