349227891 has 12 divisors (see below), whose sum is σ = 504602280. Its totient is φ = 232743840.

The previous prime is 349227887. The next prime is 349227899. The reversal of 349227891 is 198722943.

349227891 is a `hidden beast` number, since 3 + 492 + 2 + 78 + 91 = 666.

It is not a de Polignac number, because 349227891 - 2² = 349227887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (349227899) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52015 + ... + 58343.

It is an arithmetic number, because the mean of its divisors is an integer number (42050190).

Almost surely, 2^349227891 is an apocalyptic number.

349227891 is a deficient number, since it is larger than the sum of its proper divisors (155374389).

349227891 is a wasteful number, since it uses less digits than its factorization.

349227891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12466 (or 12463 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 349227891 is about 18687.6400596758. The cubic root of 349227891 is about 704.2112742645.

The spelling of 349227891 in words is "three hundred forty-nine million, two hundred twenty-seven thousand, eight hundred ninety-one".