349797919 has 2 divisors, whose sum is σ = 349797920. Its totient is φ = 349797918.

The previous prime is 349797887. The next prime is 349797947. The reversal of 349797919 is 919797943.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 349797919 - 2⁵ = 349797887 is a prime.

It is a super-2 number, since 2×349797919² = 244717168273461122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349797979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174898959 + 174898960.

It is an arithmetic number, because the mean of its divisors is an integer number (174898960).

Almost surely, 2^349797919 is an apocalyptic number.

349797919 is a deficient number, since it is larger than the sum of its proper divisors (1).

349797919 is an equidigital number, since it uses as much as digits as its factorization.

349797919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3857868, while the sum is 58.

The square root of 349797919 is about 18702.8853121651. The cubic root of 349797919 is about 704.5942161258.

The spelling of 349797919 in words is "three hundred forty-nine million, seven hundred ninety-seven thousand, nine hundred nineteen".