122897999 has 16 divisors (see below), whose sum is σ = 144587520. Its totient is φ = 102271680.

The previous prime is 122897987. The next prime is 122898019. The reversal of 122897999 is 999798221.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-122897999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122897939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52739 + ... + 55019.

It is an arithmetic number, because the mean of its divisors is an integer number (9036720).

Almost surely, 2^122897999 is an apocalyptic number.

122897999 is a deficient number, since it is larger than the sum of its proper divisors (21689521).

122897999 is a wasteful number, since it uses less digits than its factorization.

122897999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2510.

The product of its digits is 1469664, while the sum is 56.

The square root of 122897999 is about 11085.9369924242. The cubic root of 122897999 is about 497.1814736729.

The spelling of 122897999 in words is "one hundred twenty-two million, eight hundred ninety-seven thousand, nine hundred ninety-nine".