1399161902 has 16 divisors (see below), whose sum is σ = 2110927392. Its totient is φ = 695531040.

The previous prime is 1399161901. The next prime is 1399161977. The reversal of 1399161902 is 2091619931.

It is a self number, because there is not a number n which added to its sum of digits gives 1399161902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399161901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276152 + ... + 281172.

It is an arithmetic number, because the mean of its divisors is an integer number (131932962).

Almost surely, 2^1399161902 is an apocalyptic number.

1399161902 is a deficient number, since it is larger than the sum of its proper divisors (711765490).

1399161902 is a wasteful number, since it uses less digits than its factorization.

1399161902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5803.

The product of its (nonzero) digits is 26244, while the sum is 41.

The square root of 1399161902 is about 37405.3726354918. The cubic root of 1399161902 is about 1118.4656663393.

The spelling of 1399161902 in words is "one billion, three hundred ninety-nine million, one hundred sixty-one thousand, nine hundred two".