349801390 has 16 divisors (see below), whose sum is σ = 635757408. Its totient is φ = 138561696.

The previous prime is 349801357. The next prime is 349801391. The reversal of 349801390 is 93108943.

It is a super-2 number, since 2×349801390² = 244722024891864200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349801391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168777 + ... + 170836.

It is an arithmetic number, because the mean of its divisors is an integer number (39734838).

Almost surely, 2^349801390 is an apocalyptic number.

349801390 is a deficient number, since it is larger than the sum of its proper divisors (285956018).

349801390 is a wasteful number, since it uses less digits than its factorization.

349801390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339723.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 349801390 is about 18702.9781051040. The cubic root of 349801390 is about 704.5965466508.

The spelling of 349801390 in words is "three hundred forty-nine million, eight hundred one thousand, three hundred ninety".