349731747 has 24 divisors (see below), whose sum is σ = 520805376. Its totient is φ = 226031856.

The previous prime is 349731743. The next prime is 349731799. The reversal of 349731747 is 747137943.

It is not a de Polignac number, because 349731747 - 2² = 349731743 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (349731743) 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, 41398 + ... + 49124.

It is an arithmetic number, because the mean of its divisors is an integer number (21700224).

Almost surely, 2^349731747 is an apocalyptic number.

349731747 is a deficient number, since it is larger than the sum of its proper divisors (171073629).

349731747 is a wasteful number, since it uses less digits than its factorization.

349731747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7887 (or 7884 counting only the distinct ones).

The product of its digits is 444528, while the sum is 45.

The square root of 349731747 is about 18701.1161966338. The cubic root of 349731747 is about 704.5497834727.

The spelling of 349731747 in words is "three hundred forty-nine million, seven hundred thirty-one thousand, seven hundred forty-seven".