1222739396 has 12 divisors (see below), whose sum is σ = 2147099052. Its totient is φ = 609282528.

The previous prime is 1222739387. The next prime is 1222739411. The reversal of 1222739396 is 6939372221.

It can be written as a sum of positive squares in 2 ways, for example, as 1089660100 + 133079296 = 33010^2 + 11536^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 520475 + ... + 522818.

It is an arithmetic number, because the mean of its divisors is an integer number (178924921).

Almost surely, 2^1222739396 is an apocalyptic number.

It is an amenable number.

1222739396 is a deficient number, since it is larger than the sum of its proper divisors (924359656).

1222739396 is a wasteful number, since it uses less digits than its factorization.

1222739396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043590 (or 1043588 counting only the distinct ones).

The product of its digits is 244944, while the sum is 44.

The square root of 1222739396 is about 34967.6907444572. The cubic root of 1222739396 is about 1069.3288935191.

The spelling of 1222739396 in words is "one billion, two hundred twenty-two million, seven hundred thirty-nine thousand, three hundred ninety-six".