972791 has 4 divisors (see below), whose sum is σ = 1030032. Its totient is φ = 915552.

The previous prime is 972787. The next prime is 972793. The reversal of 972791 is 197279.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 972791 - 2² = 972787 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (972793) 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, 28595 + ... + 28628.

It is an arithmetic number, because the mean of its divisors is an integer number (257508).

2⁹⁷²⁷⁹¹ is an apocalyptic number.

972791 is a deficient number, since it is larger than the sum of its proper divisors (57241).

972791 is a wasteful number, since it uses less digits than its factorization.

972791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57240.

The product of its digits is 7938, while the sum is 35.

The square root of 972791 is about 986.3016779870. The cubic root of 972791 is about 99.0846808031.

The spelling of 972791 in words is "nine hundred seventy-two thousand, seven hundred ninety-one".