349509278 has 8 divisors (see below), whose sum is σ = 524376072. Its totient is φ = 174717256.

The previous prime is 349509271. The next prime is 349509337. The reversal of 349509278 is 872905943.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349509271) 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, 5000 + ... + 26907.

It is an arithmetic number, because the mean of its divisors is an integer number (65547009).

Almost surely, 2^349509278 is an apocalyptic number.

349509278 is a deficient number, since it is larger than the sum of its proper divisors (174866794).

349509278 is a wasteful number, since it uses less digits than its factorization.

349509278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37386.

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 349509278 is about 18695.1672364812. The cubic root of 349509278 is about 704.4003606328.

The spelling of 349509278 in words is "three hundred forty-nine million, five hundred nine thousand, two hundred seventy-eight".