349642643 has 8 divisors (see below), whose sum is σ = 407131488. Its totient is φ = 294038784.

The previous prime is 349642627. The next prime is 349642651. The reversal of 349642643 is 346246943.

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

It is a cyclic number.

It is not a de Polignac number, because 349642643 - 2⁴ = 349642627 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 349642643.

It is not an unprimeable number, because it can be changed into a prime (349642613) 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 7 ways as a sum of consecutive naturals, for example, 470846 + ... + 471587.

It is an arithmetic number, because the mean of its divisors is an integer number (50891436).

Almost surely, 2^349642643 is an apocalyptic number.

349642643 is a deficient number, since it is larger than the sum of its proper divisors (57488845).

349642643 is an equidigital number, since it uses as much as digits as its factorization.

349642643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942493.

The product of its digits is 373248, while the sum is 41.

The square root of 349642643 is about 18698.7337271806. The cubic root of 349642643 is about 704.4899437653.

The spelling of 349642643 in words is "three hundred forty-nine million, six hundred forty-two thousand, six hundred forty-three".