1399528508 has 12 divisors (see below), whose sum is σ = 2799057072. Its totient is φ = 599797920.

The previous prime is 1399528489. The next prime is 1399528531. The reversal of 1399528508 is 8058259931.

1399528508 is an admirable number.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24991553 + ... + 24991608.

It is an arithmetic number, because the mean of its divisors is an integer number (233254756).

Almost surely, 2^1399528508 is an apocalyptic number.

It is an amenable number.

1399528508 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.

1399528508 is a wasteful number, since it uses less digits than its factorization.

1399528508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49983172 (or 49983170 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 50.

The square root of 1399528508 is about 37410.2727602994. The cubic root of 1399528508 is about 1118.5633439601.

The spelling of 1399528508 in words is "one billion, three hundred ninety-nine million, five hundred twenty-eight thousand, five hundred eight".