346903909 has 4 divisors (see below), whose sum is σ = 378440640. Its totient is φ = 315367180.

The previous prime is 346903901. The next prime is 346903939. The reversal of 346903909 is 909309643.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 909309643 = 11 ⋅82664513.

It is a cyclic number.

It is not a de Polignac number, because 346903909 - 2³ = 346903901 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 (346903901) 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, 15768349 + ... + 15768370.

It is an arithmetic number, because the mean of its divisors is an integer number (94610160).

Almost surely, 2^346903909 is an apocalyptic number.

It is an amenable number.

346903909 is a deficient number, since it is larger than the sum of its proper divisors (31536731).

346903909 is a wasteful number, since it uses less digits than its factorization.

346903909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31536730.

The product of its (nonzero) digits is 157464, while the sum is 43.

The square root of 346903909 is about 18625.3566140356. The cubic root of 346903909 is about 702.6457081363.

The spelling of 346903909 in words is "three hundred forty-six million, nine hundred three thousand, nine hundred nine".