349209472 has 16 divisors (see below), whose sum is σ = 695691000. Its totient is φ = 174604672.

The previous prime is 349209457. The next prime is 349209473. The reversal of 349209472 is 274902943.

It is a tau number, because it is divible by the number of its divisors (16).

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349209473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1363972 + ... + 1364227.

Almost surely, 2^349209472 is an apocalyptic number.

349209472 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

349209472 is a deficient number, since it is larger than the sum of its proper divisors (346481528).

349209472 is an equidigital number, since it uses as much as digits as its factorization.

349209472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2728213 (or 2728201 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 349209472 is about 18687.1472408177. The cubic root of 349209472 is about 704.1988935280.

The spelling of 349209472 in words is "three hundred forty-nine million, two hundred nine thousand, four hundred seventy-two".