1399680044 has 12 divisors (see below), whose sum is σ = 2799360144. Its totient is φ = 599862864.

The previous prime is 1399680043. The next prime is 1399680047. The reversal of 1399680044 is 4400869931.

1399680044 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1399679977 and 1399680004.

It is not an unprimeable number, because it can be changed into a prime (1399680043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24994259 + ... + 24994314.

It is an arithmetic number, because the mean of its divisors is an integer number (233280012).

Almost surely, 2^1399680044 is an apocalyptic number.

1399680044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1399680044 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1399680044 is a wasteful number, since it uses less digits than its factorization.

1399680044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49988584 (or 49988582 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 1399680044 is about 37412.2980315297. The cubic root of 1399680044 is about 1118.6037138648.

The spelling of 1399680044 in words is "one billion, three hundred ninety-nine million, six hundred eighty thousand, forty-four".