349949390 has 32 divisors (see below), whose sum is σ = 743122944. Its totient is φ = 116111520.

The previous prime is 349949323. The next prime is 349949423. The reversal of 349949390 is 93949943.

It is a super-2 number, since 2×349949390² = 244929151122744200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78464 + ... + 82803.

It is an arithmetic number, because the mean of its divisors is an integer number (23222592).

Almost surely, 2^349949390 is an apocalyptic number.

349949390 is an abundant number, since it is smaller than the sum of its proper divisors (393173554).

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

349949390 is a wasteful number, since it uses less digits than its factorization.

349949390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161312.

The product of its (nonzero) digits is 944784, while the sum is 50.

The square root of 349949390 is about 18706.9342758240. The cubic root of 349949390 is about 704.6959035892.

The spelling of 349949390 in words is "three hundred forty-nine million, nine hundred forty-nine thousand, three hundred ninety".