1399735904 has 96 divisors (see below), whose sum is σ = 3231083520. Its totient is φ = 584543232.

The previous prime is 1399735889. The next prime is 1399735943. The reversal of 1399735904 is 4095379931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1468292 + ... + 1469244.

It is an arithmetic number, because the mean of its divisors is an integer number (33657120).

Almost surely, 2^1399735904 is an apocalyptic number.

1399735904 is a gapful number since it is divisible by the number (14) 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 1399735904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1615541760).

1399735904 is an abundant number, since it is smaller than the sum of its proper divisors (1831347616).

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

1399735904 is an equidigital number, since it uses as much as digits as its factorization.

1399735904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132 (or 1124 counting only the distinct ones).

The product of its (nonzero) digits is 918540, while the sum is 50.

The square root of 1399735904 is about 37413.0445700427. The cubic root of 1399735904 is about 1118.6185944971.

The spelling of 1399735904 in words is "one billion, three hundred ninety-nine million, seven hundred thirty-five thousand, nine hundred four".