8972981 has 8 divisors (see below), whose sum is σ = 9513984. Its totient is φ = 8447760.

The previous prime is 8972969. The next prime is 8972983. The reversal of 8972981 is 1892798.

8972981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8972981 is a prime.

It is a super-2 number, since 2×8972981² = 161028776052722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8972983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2765 + ... + 5058.

It is an arithmetic number, because the mean of its divisors is an integer number (1189248).

Almost surely, 2^8972981 is an apocalyptic number.

It is an amenable number.

8972981 is a deficient number, since it is larger than the sum of its proper divisors (541003).

8972981 is a wasteful number, since it uses less digits than its factorization.

8972981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7891.

The product of its digits is 72576, while the sum is 44.

The square root of 8972981 is about 2995.4934484989. The cubic root of 8972981 is about 207.8000188973.

The spelling of 8972981 in words is "eight million, nine hundred seventy-two thousand, nine hundred eighty-one".