1399074768 has 200 divisors, whose sum is σ = 4984208768. Its totient is φ = 368955648.

The previous prime is 1399074757. The next prime is 1399074791. The reversal of 1399074768 is 8674709931.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 112005 + ... + 123867.

Almost surely, 2^1399074768 is an apocalyptic number.

1399074768 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1399074768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2492104384).

1399074768 is an abundant number, since it is smaller than the sum of its proper divisors (3585134000).

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

1399074768 is a wasteful number, since it uses less digits than its factorization.

1399074768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11903 (or 11888 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The square root of 1399074768 is about 37404.2078916263. The cubic root of 1399074768 is about 1118.4424480564.

The spelling of 1399074768 in words is "one billion, three hundred ninety-nine million, seventy-four thousand, seven hundred sixty-eight".