1399553672 has 32 divisors (see below), whose sum is σ = 2866730400. Its totient is φ = 635270400.

The previous prime is 1399553629. The next prime is 1399553677. The reversal of 1399553672 is 2763559931.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1399553672.

It is not an unprimeable number, because it can be changed into a prime (1399553677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54272 + ... + 75792.

It is an arithmetic number, because the mean of its divisors is an integer number (89585325).

Almost surely, 2^1399553672 is an apocalyptic number.

It is an amenable number.

1399553672 is an abundant number, since it is smaller than the sum of its proper divisors (1467176728).

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

1399553672 is a wasteful number, since it uses less digits than its factorization.

1399553672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22277 (or 22273 counting only the distinct ones).

The product of its digits is 1530900, while the sum is 50.

The square root of 1399553672 is about 37410.6090835207. The cubic root of 1399553672 is about 1118.5700479700.

The spelling of 1399553672 in words is "one billion, three hundred ninety-nine million, five hundred fifty-three thousand, six hundred seventy-two".