1399375436 has 12 divisors (see below), whose sum is σ = 2462438160. Its totient is φ = 695821680.

The previous prime is 1399375381. The next prime is 1399375457. The reversal of 1399375436 is 6345739931.

It is a super-2 number, since 2×1399375436² = 3916503221760380192, which contains 22 as substring.

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, 965696 + ... + 967143.

It is an arithmetic number, because the mean of its divisors is an integer number (205203180).

Almost surely, 2^1399375436 is an apocalyptic number.

It is an amenable number.

1399375436 is a deficient number, since it is larger than the sum of its proper divisors (1063062724).

1399375436 is a wasteful number, since it uses less digits than its factorization.

1399375436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1933024 (or 1933022 counting only the distinct ones).

The product of its digits is 1837080, while the sum is 50.

The square root of 1399375436 is about 37408.2268491839. The cubic root of 1399375436 is about 1118.5225618991.

The spelling of 1399375436 in words is "one billion, three hundred ninety-nine million, three hundred seventy-five thousand, four hundred thirty-six".