1079725221 has 20 divisors (see below), whose sum is σ = 1614670464. Its totient is φ = 719037000.

The previous prime is 1079725189. The next prime is 1079725223. The reversal of 1079725221 is 1225279701.

It is not a de Polignac number, because 1079725221 - 2⁵ = 1079725189 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1079725223) 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 19 ways as a sum of consecutive naturals, for example, 73546 + ... + 86996.

Almost surely, 2^1079725221 is an apocalyptic number.

It is an amenable number.

1079725221 is a deficient number, since it is larger than the sum of its proper divisors (534945243).

1079725221 is an equidigital number, since it uses as much as digits as its factorization.

1079725221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14454 (or 14445 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The square root of 1079725221 is about 32859.1725550112. The cubic root of 1079725221 is about 1025.8985484996.

The spelling of 1079725221 in words is "one billion, seventy-nine million, seven hundred twenty-five thousand, two hundred twenty-one".