1392439899 has 8 divisors (see below), whose sum is σ = 1873938240. Its totient is φ = 919617416.

The previous prime is 1392439837. The next prime is 1392439933. The reversal of 1392439899 is 9989342931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1392439899 - 2¹⁹ = 1391915611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1392439099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2168589 + ... + 2169230.

It is an arithmetic number, because the mean of its divisors is an integer number (234242280).

Almost surely, 2^1392439899 is an apocalyptic number.

1392439899 is a deficient number, since it is larger than the sum of its proper divisors (481498341).

1392439899 is a wasteful number, since it uses less digits than its factorization.

1392439899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4337929.

The product of its digits is 3779136, while the sum is 57.

The square root of 1392439899 is about 37315.4110120738. The cubic root of 1392439899 is about 1116.6716395214.

The spelling of 1392439899 in words is "one billion, three hundred ninety-two million, four hundred thirty-nine thousand, eight hundred ninety-nine".