1399120172 has 12 divisors (see below), whose sum is σ = 2466333240. Its totient is φ = 694453536.

The previous prime is 1399120103. The next prime is 1399120181. The reversal of 1399120172 is 2710219931.

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, 1276022 + ... + 1277117.

It is an arithmetic number, because the mean of its divisors is an integer number (205527770).

Almost surely, 2^1399120172 is an apocalyptic number.

It is an amenable number.

1399120172 is a deficient number, since it is larger than the sum of its proper divisors (1067213068).

1399120172 is a wasteful number, since it uses less digits than its factorization.

1399120172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2553280 (or 2553278 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 1399120172 is about 37404.8148237630. The cubic root of 1399120172 is about 1118.4545468169.

The spelling of 1399120172 in words is "one billion, three hundred ninety-nine million, one hundred twenty thousand, one hundred seventy-two".