349556739 has 24 divisors (see below), whose sum is σ = 543227328. Its totient is φ = 199357200.

The previous prime is 349556731. The next prime is 349556743. The reversal of 349556739 is 937655943.

It is a happy number.

It is not a de Polignac number, because 349556739 - 2³ = 349556731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 349556691 and 349556700.

It is not an unprimeable number, because it can be changed into a prime (349556731) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84264 + ... + 88314.

It is an arithmetic number, because the mean of its divisors is an integer number (22634472).

Almost surely, 2^349556739 is an apocalyptic number.

349556739 is a deficient number, since it is larger than the sum of its proper divisors (193670589).

349556739 is a wasteful number, since it uses less digits than its factorization.

349556739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4655 (or 4648 counting only the distinct ones).

The product of its digits is 3061800, while the sum is 51.

The square root of 349556739 is about 18696.4365321309. The cubic root of 349556739 is about 704.4322434606.

The spelling of 349556739 in words is "three hundred forty-nine million, five hundred fifty-six thousand, seven hundred thirty-nine".