123959697 has 4 divisors (see below), whose sum is σ = 165279600. Its totient is φ = 82639796.

The previous prime is 123959653. The next prime is 123959701. The reversal of 123959697 is 796959321.

It is a happy number.

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 123959697 - 2²⁰ = 122911121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123959617) 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, 20659947 + ... + 20659952.

It is an arithmetic number, because the mean of its divisors is an integer number (41319900).

Almost surely, 2^123959697 is an apocalyptic number.

It is an amenable number.

123959697 is a deficient number, since it is larger than the sum of its proper divisors (41319903).

123959697 is an equidigital number, since it uses as much as digits as its factorization.

123959697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41319902.

The product of its digits is 918540, while the sum is 51.

The square root of 123959697 is about 11133.7189204686. The cubic root of 123959697 is about 498.6090635128.

The spelling of 123959697 in words is "one hundred twenty-three million, nine hundred fifty-nine thousand, six hundred ninety-seven".