8772981 has 16 divisors (see below), whose sum is σ = 13490304. Its totient is φ = 4967424.

The previous prime is 8772979. The next prime is 8772983. The reversal of 8772981 is 1892778.

It is an interprime number because it is at equal distance from previous prime (8772979) and next prime (8772983).

It is not a de Polignac number, because 8772981 - 2¹ = 8772979 is a prime.

It is a super-2 number, since 2×8772981² = 153930391252722, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8772983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 525 + ... + 4221.

It is an arithmetic number, because the mean of its divisors is an integer number (843144).

Almost surely, 2^8772981 is an apocalyptic number.

It is an amenable number.

8772981 is a deficient number, since it is larger than the sum of its proper divisors (4717323).

8772981 is a wasteful number, since it uses less digits than its factorization.

8772981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3820.

The product of its digits is 56448, while the sum is 42.

The square root of 8772981 is about 2961.9218423179. The cubic root of 8772981 is about 206.2445096794.

The spelling of 8772981 in words is "eight million, seven hundred seventy-two thousand, nine hundred eighty-one".