722989412 has 6 divisors (see below), whose sum is σ = 1265231478. Its totient is φ = 361494704.

The previous prime is 722989357. The next prime is 722989441. The reversal of 722989412 is 214989227.

It can be written as a sum of positive squares in only one way, i.e., 527437156 + 195552256 = 22966^2 + 13984^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90373673 + ... + 90373680.

It is an arithmetic number, because the mean of its divisors is an integer number (210871913).

Almost surely, 2^722989412 is an apocalyptic number.

It is an amenable number.

722989412 is a deficient number, since it is larger than the sum of its proper divisors (542242066).

722989412 is a wasteful number, since it uses less digits than its factorization.

722989412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180747357 (or 180747355 counting only the distinct ones).

The product of its digits is 145152, while the sum is 44.

The square root of 722989412 is about 26888.4624327982. The cubic root of 722989412 is about 897.5196777213.

The spelling of 722989412 in words is "seven hundred twenty-two million, nine hundred eighty-nine thousand, four hundred twelve".