120906399 has 8 divisors (see below), whose sum is σ = 163941120. Its totient is φ = 79237976.

The previous prime is 120906389. The next prime is 120906403. The reversal of 120906399 is 993609021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120906399 - 2¹² = 120902303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120906389) 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, 341367 + ... + 341720.

It is an arithmetic number, because the mean of its divisors is an integer number (20492640).

Almost surely, 2^120906399 is an apocalyptic number.

120906399 is a deficient number, since it is larger than the sum of its proper divisors (43034721).

120906399 is an equidigital number, since it uses as much as digits as its factorization.

120906399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683149.

The product of its (nonzero) digits is 26244, while the sum is 39.

The square root of 120906399 is about 10995.7445859751. The cubic root of 120906399 is about 494.4811745844.

The spelling of 120906399 in words is "one hundred twenty million, nine hundred six thousand, three hundred ninety-nine".