345678939 has 6 divisors (see below), whose sum is σ = 499314036. Its totient is φ = 230452620.

The previous prime is 345678919. The next prime is 345678941. The reversal of 345678939 is 939876543.

It is not a de Polignac number, because 345678939 - 2²¹ = 343581787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (345678919) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19204377 + ... + 19204394.

It is an arithmetic number, because the mean of its divisors is an integer number (83219006).

Almost surely, 2^345678939 is an apocalyptic number.

345678939 is a deficient number, since it is larger than the sum of its proper divisors (153635097).

345678939 is a wasteful number, since it uses less digits than its factorization.

345678939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38408777 (or 38408774 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 54.

The square root of 345678939 is about 18592.4430616312. The cubic root of 345678939 is about 701.8176834360.

The spelling of 345678939 in words is "three hundred forty-five million, six hundred seventy-eight thousand, nine hundred thirty-nine".