612345939 has 8 divisors (see below), whose sum is σ = 833832960. Its totient is φ = 399544776.

The previous prime is 612345919. The next prime is 612345949. The reversal of 612345939 is 939543216.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 612345939 - 2⁵ = 612345907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 612345939.

It is not an unprimeable number, because it can be changed into a prime (612345919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2171299 + ... + 2171580.

It is an arithmetic number, because the mean of its divisors is an integer number (104229120).

Almost surely, 2^612345939 is an apocalyptic number.

612345939 is a deficient number, since it is larger than the sum of its proper divisors (221487021).

612345939 is a wasteful number, since it uses less digits than its factorization.

612345939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4342929.

The product of its digits is 174960, while the sum is 42.

The square root of 612345939 is about 24745.6246435607. The cubic root of 612345939 is about 849.1784167506.

The spelling of 612345939 in words is "six hundred twelve million, three hundred forty-five thousand, nine hundred thirty-nine".