346408819 has 4 divisors (see below), whose sum is σ = 361470096. Its totient is φ = 331347544.

The previous prime is 346408801. The next prime is 346408823. The reversal of 346408819 is 918804643.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 918804643 = 307 ⋅2992849.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-346408819 is a prime.

It is a super-2 number, since 2×346408819² = 239998139761949522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (346408859) 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, 7530604 + ... + 7530649.

It is an arithmetic number, because the mean of its divisors is an integer number (90367524).

Almost surely, 2^346408819 is an apocalyptic number.

346408819 is a deficient number, since it is larger than the sum of its proper divisors (15061277).

346408819 is a wasteful number, since it uses less digits than its factorization.

346408819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15061276.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 346408819 is about 18612.0611163836. The cubic root of 346408819 is about 702.3112846097.

The spelling of 346408819 in words is "three hundred forty-six million, four hundred eight thousand, eight hundred nineteen".