349792819 has 4 divisors (see below), whose sum is σ = 350505720. Its totient is φ = 349079920.

The previous prime is 349792813. The next prime is 349792823. The reversal of 349792819 is 918297943.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 349792819 - 2⁵ = 349792787 is a prime.

It is a super-2 number, since 2×349792819² = 244710032447933522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349792813) 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, 355714 + ... + 356695.

It is an arithmetic number, because the mean of its divisors is an integer number (87626430).

Almost surely, 2^349792819 is an apocalyptic number.

349792819 is a deficient number, since it is larger than the sum of its proper divisors (712901).

349792819 is an equidigital number, since it uses as much as digits as its factorization.

349792819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712900.

The product of its digits is 979776, while the sum is 52.

The square root of 349792819 is about 18702.7489690687. The cubic root of 349792819 is about 704.5907918173.

The spelling of 349792819 in words is "three hundred forty-nine million, seven hundred ninety-two thousand, eight hundred nineteen".