349990023 has 4 divisors (see below), whose sum is σ = 466653368. Its totient is φ = 233326680.

The previous prime is 349990021. The next prime is 349990037. The reversal of 349990023 is 320099943.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 349990023 - 2¹ = 349990021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349990021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58331668 + ... + 58331673.

It is an arithmetic number, because the mean of its divisors is an integer number (116663342).

Almost surely, 2^349990023 is an apocalyptic number.

349990023 is a deficient number, since it is larger than the sum of its proper divisors (116663345).

349990023 is a wasteful number, since it uses less digits than its factorization.

349990023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116663344.

The product of its (nonzero) digits is 52488, while the sum is 39.

The square root of 349990023 is about 18708.0202854284. The cubic root of 349990023 is about 704.7231768667.

The spelling of 349990023 in words is "three hundred forty-nine million, nine hundred ninety thousand, twenty-three".