349921590 has 16 divisors (see below), whose sum is σ = 839811888. Its totient is φ = 93312416.

The previous prime is 349921549. The next prime is 349921597. The reversal of 349921590 is 95129943.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349921597) 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, 5831997 + ... + 5832056.

It is an arithmetic number, because the mean of its divisors is an integer number (52488243).

Almost surely, 2^349921590 is an apocalyptic number.

349921590 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

349921590 is an abundant number, since it is smaller than the sum of its proper divisors (489890298).

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

349921590 is a wasteful number, since it uses less digits than its factorization.

349921590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11664063.

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 349921590 is about 18706.1912210904. The cubic root of 349921590 is about 704.6772427338.

The spelling of 349921590 in words is "three hundred forty-nine million, nine hundred twenty-one thousand, five hundred ninety".