973491 has 4 divisors (see below), whose sum is σ = 1297992. Its totient is φ = 648992.

The previous prime is 973487. The next prime is 973523. The reversal of 973491 is 194379.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 194379 = 3 ⋅64793.

It is a cyclic number.

It is not a de Polignac number, because 973491 - 2² = 973487 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (973411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162246 + ... + 162251.

It is an arithmetic number, because the mean of its divisors is an integer number (324498).

2⁹⁷³⁴⁹¹ is an apocalyptic number.

973491 is a deficient number, since it is larger than the sum of its proper divisors (324501).

973491 is a wasteful number, since it uses less digits than its factorization.

973491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324500.

The product of its digits is 6804, while the sum is 33.

The square root of 973491 is about 986.6564751726. The cubic root of 973491 is about 99.1084415241.

The spelling of 973491 in words is "nine hundred seventy-three thousand, four hundred ninety-one".