123779379 has 4 divisors (see below), whose sum is σ = 165039176. Its totient is φ = 82519584.

The previous prime is 123779371. The next prime is 123779417. The reversal of 123779379 is 973977321.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 123779379 - 2³ = 123779371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123779371) 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, 20629894 + ... + 20629899.

It is an arithmetic number, because the mean of its divisors is an integer number (41259794).

Almost surely, 2^123779379 is an apocalyptic number.

123779379 is a deficient number, since it is larger than the sum of its proper divisors (41259797).

123779379 is an equidigital number, since it uses as much as digits as its factorization.

123779379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41259796.

The product of its digits is 500094, while the sum is 48.

The square root of 123779379 is about 11125.6181401305. The cubic root of 123779379 is about 498.3671789284.

The spelling of 123779379 in words is "one hundred twenty-three million, seven hundred seventy-nine thousand, three hundred seventy-nine".