120388439 has 2 divisors, whose sum is σ = 120388440. Its totient is φ = 120388438.

The previous prime is 120388399. The next prime is 120388447. The reversal of 120388439 is 934883021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120388439 - 2⁸ = 120388183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120388459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60194219 + 60194220.

It is an arithmetic number, because the mean of its divisors is an integer number (60194220).

Almost surely, 2^120388439 is an apocalyptic number.

120388439 is a deficient number, since it is larger than the sum of its proper divisors (1).

120388439 is an equidigital number, since it uses as much as digits as its factorization.

120388439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 120388439 is about 10972.1665590712. The cubic root of 120388439 is about 493.7740488420.

The spelling of 120388439 in words is "one hundred twenty million, three hundred eighty-eight thousand, four hundred thirty-nine".