1386939792 has 40 divisors (see below), whose sum is σ = 4094775616. Its totient is φ = 396268416.

The previous prime is 1386939791. The next prime is 1386939811. The reversal of 1386939792 is 2979396831.

It is not an unprimeable number, because it can be changed into a prime (1386939791) 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, 2063563 + ... + 2064234.

Almost surely, 2^1386939792 is an apocalyptic number.

1386939792 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1386939792 is an abundant number, since it is smaller than the sum of its proper divisors (2707835824).

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

1386939792 is a wasteful number, since it uses less digits than its factorization.

1386939792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4127815 (or 4127809 counting only the distinct ones).

The product of its digits is 4408992, while the sum is 57.

The square root of 1386939792 is about 37241.6405653671. The cubic root of 1386939792 is about 1115.1994232641.

The spelling of 1386939792 in words is "one billion, three hundred eighty-six million, nine hundred thirty-nine thousand, seven hundred ninety-two".