350921 has 4 divisors (see below), whose sum is σ = 354432. Its totient is φ = 347412.

The previous prime is 350899. The next prime is 350941. The reversal of 350921 is 129053.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-350921 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 350893 and 350902.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 350921.

It is not an unprimeable number, because it can be changed into a prime (350941) 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, 1601 + ... + 1806.

It is an arithmetic number, because the mean of its divisors is an integer number (88608).

2³⁵⁰⁹²¹ is an apocalyptic number.

It is an amenable number.

350921 is a deficient number, since it is larger than the sum of its proper divisors (3511).

350921 is a wasteful number, since it uses less digits than its factorization.

350921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3510.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 350921 is about 592.3858539837. The cubic root of 350921 is about 70.5347480567.

Adding to 350921 its reverse (129053), we get a palindrome (479974).

The spelling of 350921 in words is "three hundred fifty thousand, nine hundred twenty-one".