1397744852 has 24 divisors (see below), whose sum is σ = 2821621824. Its totient is φ = 593433792.

The previous prime is 1397744851. The next prime is 1397744857. The reversal of 1397744852 is 2584477931.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1397744852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397744851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230273 + ... + 236264.

It is an arithmetic number, because the mean of its divisors is an integer number (117567576).

Almost surely, 2^1397744852 is an apocalyptic number.

It is an amenable number.

1397744852 is an abundant number, since it is smaller than the sum of its proper divisors (1423876972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1397744852 is a wasteful number, since it uses less digits than its factorization.

1397744852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466655 (or 466653 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 50.

The square root of 1397744852 is about 37386.4260394063. The cubic root of 1397744852 is about 1118.0879504288.

The spelling of 1397744852 in words is "one billion, three hundred ninety-seven million, seven hundred forty-four thousand, eight hundred fifty-two".