120949391 has 2 divisors, whose sum is σ = 120949392. Its totient is φ = 120949390.

The previous prime is 120949369. The next prime is 120949453. The reversal of 120949391 is 193949021.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120949391 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120949331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60474695 + 60474696.

It is an arithmetic number, because the mean of its divisors is an integer number (60474696).

Almost surely, 2^120949391 is an apocalyptic number.

120949391 is a deficient number, since it is larger than the sum of its proper divisors (1).

120949391 is an equidigital number, since it uses as much as digits as its factorization.

120949391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 120949391 is about 10997.6993503187. The cubic root of 120949391 is about 494.5397769843.

The spelling of 120949391 in words is "one hundred twenty million, nine hundred forty-nine thousand, three hundred ninety-one".