972891 has 10 divisors (see below), whose sum is σ = 1453452. Its totient is φ = 648540.

The previous prime is 972887. The next prime is 972899. The reversal of 972891 is 198279.

It is a happy number.

It is not a de Polignac number, because 972891 - 2² = 972887 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 972891.

It is not an unprimeable number, because it can be changed into a prime (972899) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5925 + ... + 6086.

2⁹⁷²⁸⁹¹ is an apocalyptic number.

972891 is a deficient number, since it is larger than the sum of its proper divisors (480561).

972891 is a wasteful number, since it uses less digits than its factorization.

972891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12023 (or 12014 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 972891 is about 986.3523711129. The cubic root of 972891 is about 99.0880758895.

It can be divided in two parts, 9 and 72891, that added together give a square (72900 = 270²).

The spelling of 972891 in words is "nine hundred seventy-two thousand, eight hundred ninety-one".