122899993 has 4 divisors (see below), whose sum is σ = 122923008. Its totient is φ = 122876980.

The previous prime is 122899991. The next prime is 122900033. The reversal of 122899993 is 399998221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 122899993 - 2¹ = 122899991 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122899993.

It is not an unprimeable number, because it can be changed into a prime (122899991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1128 + ... + 15718.

It is an arithmetic number, because the mean of its divisors is an integer number (30730752).

Almost surely, 2^122899993 is an apocalyptic number.

It is an amenable number.

122899993 is a deficient number, since it is larger than the sum of its proper divisors (23015).

122899993 is an equidigital number, since it uses as much as digits as its factorization.

122899993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23014.

The product of its digits is 629856, while the sum is 52.

The square root of 122899993 is about 11086.0269258197. The cubic root of 122899993 is about 497.1841625544.

The spelling of 122899993 in words is "one hundred twenty-two million, eight hundred ninety-nine thousand, nine hundred ninety-three".