1399734416 has 40 divisors (see below), whose sum is σ = 2808804600. Its totient is φ = 674938880.

The previous prime is 1399734377. The next prime is 1399734431. The reversal of 1399734416 is 6144379931.

It can be written as a sum of positive squares in 4 ways, for example, as 167443600 + 1232290816 = 12940^2 + 35104^2 .

It is a super-2 number, since 2×1399734416² = 3918512870669722112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 652706 + ... + 654846.

It is an arithmetic number, because the mean of its divisors is an integer number (70220115).

Almost surely, 2^1399734416 is an apocalyptic number.

1399734416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1399734416 is an abundant number, since it is smaller than the sum of its proper divisors (1409070184).

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

1399734416 is a wasteful number, since it uses less digits than its factorization.

1399734416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3587 (or 3581 counting only the distinct ones).

The product of its digits is 489888, while the sum is 47.

The square root of 1399734416 is about 37413.0246839252. The cubic root of 1399734416 is about 1118.6181981116.

The spelling of 1399734416 in words is "one billion, three hundred ninety-nine million, seven hundred thirty-four thousand, four hundred sixteen".