349993478 has 8 divisors (see below), whose sum is σ = 533596800. Its totient is φ = 172127880.

The previous prime is 349993459. The next prime is 349993493. The reversal of 349993478 is 874399943.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1434278 + ... + 1434521.

It is an arithmetic number, because the mean of its divisors is an integer number (66699600).

Almost surely, 2^349993478 is an apocalyptic number.

349993478 is a deficient number, since it is larger than the sum of its proper divisors (183603322).

349993478 is a wasteful number, since it uses less digits than its factorization.

349993478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2868862.

The product of its digits is 5878656, while the sum is 56.

The square root of 349993478 is about 18708.1126252757. The cubic root of 349993478 is about 704.7254958000.

The spelling of 349993478 in words is "three hundred forty-nine million, nine hundred ninety-three thousand, four hundred seventy-eight".