120399393 has 4 divisors (see below), whose sum is σ = 160532528. Its totient is φ = 80266260.

The previous prime is 120399379. The next prime is 120399401. The reversal of 120399393 is 393993021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-120399393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120399313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20066563 + ... + 20066568.

It is an arithmetic number, because the mean of its divisors is an integer number (40133132).

Almost surely, 2^120399393 is an apocalyptic number.

It is an amenable number.

120399393 is a deficient number, since it is larger than the sum of its proper divisors (40133135).

120399393 is an equidigital number, since it uses as much as digits as its factorization.

120399393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40133134.

The product of its (nonzero) digits is 39366, while the sum is 39.

The square root of 120399393 is about 10972.6657198695. The cubic root of 120399393 is about 493.7890243577.

The spelling of 120399393 in words is "one hundred twenty million, three hundred ninety-nine thousand, three hundred ninety-three".