123630439 has 4 divisors (see below), whose sum is σ = 123924520. Its totient is φ = 123336360.

The previous prime is 123630433. The next prime is 123630491. The reversal of 123630439 is 934036321.

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

It is a cyclic number.

It is not a de Polignac number, because 123630439 - 2⁵ = 123630407 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 123630439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123630433) 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, 146409 + ... + 147250.

It is an arithmetic number, because the mean of its divisors is an integer number (30981130).

Almost surely, 2^123630439 is an apocalyptic number.

123630439 is a deficient number, since it is larger than the sum of its proper divisors (294081).

123630439 is an equidigital number, since it uses as much as digits as its factorization.

123630439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294080.

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 123630439 is about 11118.9225647092. The cubic root of 123630439 is about 498.1672086270.

The spelling of 123630439 in words is "one hundred twenty-three million, six hundred thirty thousand, four hundred thirty-nine".