349946287 has 4 divisors (see below), whose sum is σ = 355877640. Its totient is φ = 344014936.

The previous prime is 349946273. The next prime is 349946297. The reversal of 349946287 is 782649943.

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 349946287 - 2²⁷ = 215728559 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 (349946257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2965588 + ... + 2965705.

It is an arithmetic number, because the mean of its divisors is an integer number (88969410).

Almost surely, 2^349946287 is an apocalyptic number.

349946287 is a deficient number, since it is larger than the sum of its proper divisors (5931353).

349946287 is an equidigital number, since it uses as much as digits as its factorization.

349946287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5931352.

The product of its digits is 2612736, while the sum is 52.

The square root of 349946287 is about 18706.8513384802. The cubic root of 349946287 is about 704.6938207377.

The spelling of 349946287 in words is "three hundred forty-nine million, nine hundred forty-six thousand, two hundred eighty-seven".