349475279 has 4 divisors (see below), whose sum is σ = 349587000. Its totient is φ = 349363560.

The previous prime is 349475261. The next prime is 349475281. The reversal of 349475279 is 972574943.

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 349475279 - 2⁸ = 349475023 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 (349475209) 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, 51029 + ... + 57470.

It is an arithmetic number, because the mean of its divisors is an integer number (87396750).

Almost surely, 2^349475279 is an apocalyptic number.

349475279 is a deficient number, since it is larger than the sum of its proper divisors (111721).

349475279 is a wasteful number, since it uses less digits than its factorization.

349475279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111720.

The product of its digits is 1905120, while the sum is 50.

The square root of 349475279 is about 18694.2579151995. The cubic root of 349475279 is about 704.3775193847.

The spelling of 349475279 in words is "three hundred forty-nine million, four hundred seventy-five thousand, two hundred seventy-nine".