349509942 has 24 divisors (see below), whose sum is σ = 765783720. Its totient is φ = 115193760.

The previous prime is 349509913. The next prime is 349509949. The reversal of 349509942 is 249905943.

It is a happy number.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349509949) 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, 107484 + ... + 110687.

It is an arithmetic number, because the mean of its divisors is an integer number (31907655).

Almost surely, 2^349509942 is an apocalyptic number.

349509942 is an abundant number, since it is smaller than the sum of its proper divisors (416273778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

349509942 is a wasteful number, since it uses less digits than its factorization.

349509942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218268 (or 218265 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 349509942 is about 18695.1849950729. The cubic root of 349509942 is about 704.4008067074.

The spelling of 349509942 in words is "three hundred forty-nine million, five hundred nine thousand, nine hundred forty-two".