122444391 has 8 divisors (see below), whose sum is σ = 165326080. Its totient is φ = 80596152.

The previous prime is 122444381. The next prime is 122444393. The reversal of 122444391 is 193444221.

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

It is a de Polignac number, because none of the positive numbers 2^k-122444391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122444393) 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, 258085 + ... + 258558.

It is an arithmetic number, because the mean of its divisors is an integer number (20665760).

Almost surely, 2^122444391 is an apocalyptic number.

122444391 is a deficient number, since it is larger than the sum of its proper divisors (42881689).

122444391 is an equidigital number, since it uses as much as digits as its factorization.

122444391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516725.

The product of its digits is 6912, while the sum is 30.

The square root of 122444391 is about 11065.4593668767. The cubic root of 122444391 is about 496.5690321023.

The spelling of 122444391 in words is "one hundred twenty-two million, four hundred forty-four thousand, three hundred ninety-one".