1397822372 has 6 divisors (see below), whose sum is σ = 2446189158. Its totient is φ = 698911184.

The previous prime is 1397822357. The next prime is 1397822411. The reversal of 1397822372 is 2732287931.

It can be written as a sum of positive squares in only one way, i.e., 939177316 + 458645056 = 30646^2 + 21416^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 174727793 + ... + 174727800.

It is an arithmetic number, because the mean of its divisors is an integer number (407698193).

Almost surely, 2^1397822372 is an apocalyptic number.

It is an amenable number.

1397822372 is a deficient number, since it is larger than the sum of its proper divisors (1048366786).

1397822372 is a wasteful number, since it uses less digits than its factorization.

1397822372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349455597 (or 349455595 counting only the distinct ones).

The product of its digits is 254016, while the sum is 44.

The square root of 1397822372 is about 37387.4627649430. The cubic root of 1397822372 is about 1118.1086200513.

The spelling of 1397822372 in words is "one billion, three hundred ninety-seven million, eight hundred twenty-two thousand, three hundred seventy-two".