346639943 has 4 divisors (see below), whose sum is σ = 373304568. Its totient is φ = 319975320.

The previous prime is 346639919. The next prime is 346639991. The reversal of 346639943 is 349936643.

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 346639943 - 2⁸ = 346639687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (346639043) 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, 13332293 + ... + 13332318.

It is an arithmetic number, because the mean of its divisors is an integer number (93326142).

Almost surely, 2^346639943 is an apocalyptic number.

346639943 is a deficient number, since it is larger than the sum of its proper divisors (26664625).

346639943 is a wasteful number, since it uses less digits than its factorization.

346639943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26664624.

The product of its digits is 1259712, while the sum is 47.

The square root of 346639943 is about 18618.2690656248. The cubic root of 346639943 is about 702.4674439390.

The spelling of 346639943 in words is "three hundred forty-six million, six hundred thirty-nine thousand, nine hundred forty-three".