1399321492 has 12 divisors (see below), whose sum is σ = 2449173076. Its totient is φ = 699557760.

The previous prime is 1399321477. The next prime is 1399321501. The reversal of 1399321492 is 2941239931.

It can be written as a sum of positive squares in 2 ways, for example, as 782097156 + 617224336 = 27966^2 + 24844^2 .

It is a congruent number.

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, 10492 + ... + 53932.

Almost surely, 2^1399321492 is an apocalyptic number.

It is an amenable number.

1399321492 is a deficient number, since it is larger than the sum of its proper divisors (1049851584).

1399321492 is a wasteful number, since it uses less digits than its factorization.

1399321492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51498 (or 51496 counting only the distinct ones).

The product of its digits is 104976, while the sum is 43.

The square root of 1399321492 is about 37407.5058243663. The cubic root of 1399321492 is about 1118.5081892118.

The spelling of 1399321492 in words is "one billion, three hundred ninety-nine million, three hundred twenty-one thousand, four hundred ninety-two".