1397899704 has 64 divisors (see below), whose sum is σ = 3660940800. Its totient is φ = 443966336.

The previous prime is 1397899661. The next prime is 1397899733. The reversal of 1397899704 is 4079987931.

It is a congruent number.

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 in 15 ways as a sum of consecutive naturals, for example, 140362 + ... + 149990.

It is an arithmetic number, because the mean of its divisors is an integer number (57202200).

Almost surely, 2^1397899704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1397899704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1830470400).

1397899704 is an abundant number, since it is smaller than the sum of its proper divisors (2263041096).

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

1397899704 is a wasteful number, since it uses less digits than its factorization.

1397899704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9924 (or 9920 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 57.

The square root of 1397899704 is about 37388.4969475907. The cubic root of 1397899704 is about 1118.1292387849.

The spelling of 1397899704 in words is "one billion, three hundred ninety-seven million, eight hundred ninety-nine thousand, seven hundred four".