347640939 has 48 divisors (see below), whose sum is σ = 554872032. Its totient is φ = 208825344.

The previous prime is 347640911. The next prime is 347640941. The reversal of 347640939 is 939046743.

It is not a de Polignac number, because 347640939 - 2¹¹ = 347638891 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 347640894 and 347640903.

It is not an unprimeable number, because it can be changed into a prime (347640959) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 348189 + ... + 349185.

It is an arithmetic number, because the mean of its divisors is an integer number (11559834).

Almost surely, 2^347640939 is an apocalyptic number.

347640939 is a deficient number, since it is larger than the sum of its proper divisors (207231093).

347640939 is a wasteful number, since it uses less digits than its factorization.

347640939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1116 (or 1113 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 45.

The square root of 347640939 is about 18645.1317774909. The cubic root of 347640939 is about 703.1429684534.

The spelling of 347640939 in words is "three hundred forty-seven million, six hundred forty thousand, nine hundred thirty-nine".