973921 has 8 divisors (see below), whose sum is σ = 1104320. Its totient is φ = 851472.

The previous prime is 973919. The next prime is 973957. The reversal of 973921 is 129379.

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 973921 - 2¹ = 973919 is a prime.

It is a super-2 number, since 2×973921² = 1897044228482, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (973901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1725 + ... + 2218.

It is an arithmetic number, because the mean of its divisors is an integer number (138040).

2⁹⁷³⁹²¹ is an apocalyptic number.

It is an amenable number.

973921 is a deficient number, since it is larger than the sum of its proper divisors (130399).

973921 is a wasteful number, since it uses less digits than its factorization.

973921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3975.

The product of its digits is 3402, while the sum is 31.

The square root of 973921 is about 986.8743587712. The cubic root of 973921 is about 99.1230317486.

The spelling of 973921 in words is "nine hundred seventy-three thousand, nine hundred twenty-one".