349204261 has 16 divisors (see below), whose sum is σ = 412637440. Its totient is φ = 289267200.

The previous prime is 349204231. The next prime is 349204277. The reversal of 349204261 is 162402943.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-349204261 is a prime.

It is a super-2 number, since 2×349204261² = 243887231801112242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349204231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34645 + ... + 43573.

It is an arithmetic number, because the mean of its divisors is an integer number (25789840).

Almost surely, 2^349204261 is an apocalyptic number.

It is an amenable number.

349204261 is a deficient number, since it is larger than the sum of its proper divisors (63433179).

349204261 is a wasteful number, since it uses less digits than its factorization.

349204261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9124.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 349204261 is about 18687.0078129164. The cubic root of 349204261 is about 704.1953907606.

The spelling of 349204261 in words is "three hundred forty-nine million, two hundred four thousand, two hundred sixty-one".