351949 has 4 divisors (see below), whose sum is σ = 379036. Its totient is φ = 324864.

The previous prime is 351931. The next prime is 351959. The reversal of 351949 is 949153.

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 108900 + 243049 = 330^2 + 493^2 .

It is a cyclic number.

It is not a de Polignac number, because 351949 - 2⁹ = 351437 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 351949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (351919) 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, 13524 + ... + 13549.

It is an arithmetic number, because the mean of its divisors is an integer number (94759).

2³⁵¹⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

351949 is a deficient number, since it is larger than the sum of its proper divisors (27087).

351949 is a wasteful number, since it uses less digits than its factorization.

351949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27086.

The product of its digits is 4860, while the sum is 31.

The square root of 351949 is about 593.2528971695. The cubic root of 351949 is about 70.6035565463.

The spelling of 351949 in words is "three hundred fifty-one thousand, nine hundred forty-nine".