345644039 has 12 divisors (see below), whose sum is σ = 379029600. Its totient is φ = 315005184.

The previous prime is 345644027. The next prime is 345644041. The reversal of 345644039 is 930446543.

It is a happy number.

It is not a de Polignac number, because 345644039 - 2¹⁶ = 345578503 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 345643993 and 345644011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345644009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 407 + ... + 26295.

It is an arithmetic number, because the mean of its divisors is an integer number (31585800).

Almost surely, 2^345644039 is an apocalyptic number.

345644039 is a deficient number, since it is larger than the sum of its proper divisors (33385561).

345644039 is a wasteful number, since it uses less digits than its factorization.

345644039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25994 (or 25981 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 38.

The square root of 345644039 is about 18591.5044845757. The cubic root of 345644039 is about 701.7940639646.

The spelling of 345644039 in words is "three hundred forty-five million, six hundred forty-four thousand, thirty-nine".