1396039988 has 36 divisors (see below), whose sum is σ = 2933626752. Its totient is φ = 579000240.

The previous prime is 1396039973. The next prime is 1396039999. The reversal of 1396039988 is 8899306931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108806 + ... + 120957.

It is an arithmetic number, because the mean of its divisors is an integer number (81489632).

Almost surely, 2^1396039988 is an apocalyptic number.

It is an amenable number.

1396039988 is an abundant number, since it is smaller than the sum of its proper divisors (1537586764).

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

1396039988 is a wasteful number, since it uses less digits than its factorization.

1396039988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229812 (or 229803 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 56.

The square root of 1396039988 is about 37363.6185078480. The cubic root of 1396039988 is about 1117.6331789621.

The spelling of 1396039988 in words is "one billion, three hundred ninety-six million, thirty-nine thousand, nine hundred eighty-eight".