349957 has 4 divisors (see below), whose sum is σ = 355756. Its totient is φ = 344160.

The previous prime is 349949. The next prime is 349963. The reversal of 349957 is 759943.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6561 + 343396 = 81^2 + 586^2 .

It is a cyclic number.

It is not a de Polignac number, because 349957 - 2³ = 349949 is a prime.

It is a Duffinian number.

349957 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349907) 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, 2808 + ... + 2929.

It is an arithmetic number, because the mean of its divisors is an integer number (88939).

2³⁴⁹⁹⁵⁷ is an apocalyptic number.

It is an amenable number.

349957 is a deficient number, since it is larger than the sum of its proper divisors (5799).

349957 is an equidigital number, since it uses as much as digits as its factorization.

349957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5798.

The product of its digits is 34020, while the sum is 37.

The square root of 349957 is about 591.5716355607. The cubic root of 349957 is about 70.4701011658.

The spelling of 349957 in words is "three hundred forty-nine thousand, nine hundred fifty-seven".