373921 has 4 divisors (see below), whose sum is σ = 376000. Its totient is φ = 371844.

The previous prime is 373909. The next prime is 373937. The reversal of 373921 is 129373.

373921 is nontrivially palindromic in base 14.

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, and also an emirpimes, since its reverse is a distinct semiprime: 129373 = 53 ⋅2441.

It is a cyclic number.

It is not a de Polignac number, because 373921 - 2¹¹ = 371873 is a prime.

It is a Duffinian number.

373921 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (373951) 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, 741 + ... + 1138.

It is an arithmetic number, because the mean of its divisors is an integer number (94000).

2³⁷³⁹²¹ is an apocalyptic number.

It is an amenable number.

373921 is a deficient number, since it is larger than the sum of its proper divisors (2079).

373921 is a wasteful number, since it uses less digits than its factorization.

373921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2078.

The product of its digits is 1134, while the sum is 25.

The square root of 373921 is about 611.4908012391. The cubic root of 373921 is about 72.0432481939.

The spelling of 373921 in words is "three hundred seventy-three thousand, nine hundred twenty-one".