349254784 has 16 divisors (see below), whose sum is σ = 695781270. Its totient is φ = 174627328.

The previous prime is 349254781. The next prime is 349254809. The reversal of 349254784 is 487452943.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 326597184 + 22657600 = 18072^2 + 4760^2 .

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

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (349254781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1364149 + ... + 1364404.

Almost surely, 2^349254784 is an apocalyptic number.

It is an amenable number.

349254784 is a deficient number, since it is larger than the sum of its proper divisors (346526486).

349254784 is an equidigital number, since it uses as much as digits as its factorization.

349254784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2728567 (or 2728555 counting only the distinct ones).

The product of its digits is 967680, while the sum is 46.

The square root of 349254784 is about 18688.3595855816. The cubic root of 349254784 is about 704.2293502050.

The spelling of 349254784 in words is "three hundred forty-nine million, two hundred fifty-four thousand, seven hundred eighty-four".