8002981 has 4 divisors (see below), whose sum is σ = 9146272. Its totient is φ = 6859692.

The previous prime is 8002961. The next prime is 8002987. The reversal of 8002981 is 1892008.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-8002981 is a prime.

It is a super-2 number, since 2×8002981² = 128095409772722, 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 (8002987) 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, 571635 + ... + 571648.

It is an arithmetic number, because the mean of its divisors is an integer number (2286568).

Almost surely, 2^8002981 is an apocalyptic number.

It is an amenable number.

8002981 is a deficient number, since it is larger than the sum of its proper divisors (1143291).

8002981 is a wasteful number, since it uses less digits than its factorization.

8002981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143290.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 8002981 is about 2828.9540469933. The cubic root of 8002981 is about 200.0248385818.

Adding to 8002981 its reverse (1892008), we get a palindrome (9894989).

The spelling of 8002981 in words is "eight million, two thousand, nine hundred eighty-one".