122993929 has 4 divisors (see below), whose sum is σ = 130228884. Its totient is φ = 115758976.

The previous prime is 122993917. The next prime is 122993951. The reversal of 122993929 is 929399221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 929399221 = 29 ⋅32048249.

It can be written as a sum of positive squares in 2 ways, for example, as 91240704 + 31753225 = 9552^2 + 5635^2 .

It is a cyclic number.

It is not a de Polignac number, because 122993929 - 2²¹ = 120896777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122993989) 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, 3617452 + ... + 3617485.

It is an arithmetic number, because the mean of its divisors is an integer number (32557221).

Almost surely, 2^122993929 is an apocalyptic number.

It is an amenable number.

122993929 is a deficient number, since it is larger than the sum of its proper divisors (7234955).

122993929 is an equidigital number, since it uses as much as digits as its factorization.

122993929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7234954.

The product of its digits is 157464, while the sum is 46.

The square root of 122993929 is about 11090.2628012144. The cubic root of 122993929 is about 497.3108010146.

The spelling of 122993929 in words is "one hundred twenty-two million, nine hundred ninety-three thousand, nine hundred twenty-nine".