346238921 has 4 divisors (see below), whose sum is σ = 395701632. Its totient is φ = 296776212.

The previous prime is 346238903. The next prime is 346238947. The reversal of 346238921 is 129832643.

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: 129832643 = 19 ⋅6833297.

It is a cyclic number.

It is not a de Polignac number, because 346238921 - 2⁶ = 346238857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (346238521) 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, 24731345 + ... + 24731358.

It is an arithmetic number, because the mean of its divisors is an integer number (98925408).

Almost surely, 2^346238921 is an apocalyptic number.

It is an amenable number.

346238921 is a deficient number, since it is larger than the sum of its proper divisors (49462711).

346238921 is an equidigital number, since it uses as much as digits as its factorization.

346238921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49462710.

The product of its digits is 62208, while the sum is 38.

The square root of 346238921 is about 18607.4963657124. The cubic root of 346238921 is about 702.1964484309.

The spelling of 346238921 in words is "three hundred forty-six million, two hundred thirty-eight thousand, nine hundred twenty-one".