1397599556 has 24 divisors (see below), whose sum is σ = 2465207640. Its totient is φ = 693268992.

The previous prime is 1397599537. The next prime is 1397599573. The reversal of 1397599556 is 6559957931.

It can be written as a sum of positive squares in 4 ways, for example, as 36100 + 1397563456 = 190^2 + 37384^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1397599495 and 1397599504.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 534380 + ... + 536988.

It is an arithmetic number, because the mean of its divisors is an integer number (102716985).

Almost surely, 2^1397599556 is an apocalyptic number.

It is an amenable number.

1397599556 is a deficient number, since it is larger than the sum of its proper divisors (1067608084).

1397599556 is a wasteful number, since it uses less digits than its factorization.

1397599556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3623 (or 3621 counting only the distinct ones).

The product of its digits is 11481750, while the sum is 59.

The square root of 1397599556 is about 37384.4828237599. The cubic root of 1397599556 is about 1118.0492072261.

The spelling of 1397599556 in words is "one billion, three hundred ninety-seven million, five hundred ninety-nine thousand, five hundred fifty-six".