8981513 has 4 divisors (see below), whose sum is σ = 9089808. Its totient is φ = 8873220.

The previous prime is 8981461. The next prime is 8981563. The reversal of 8981513 is 3151898.

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 cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8981513 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8981563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54023 + ... + 54188.

It is an arithmetic number, because the mean of its divisors is an integer number (2272452).

Almost surely, 2^8981513 is an apocalyptic number.

8981513 is a gapful number since it is divisible by the number (83) formed by its first and last digit.

It is an amenable number.

8981513 is a deficient number, since it is larger than the sum of its proper divisors (108295).

8981513 is a wasteful number, since it uses less digits than its factorization.

8981513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108294.

The product of its digits is 8640, while the sum is 35.

The square root of 8981513 is about 2996.9172494415. The cubic root of 8981513 is about 207.8658605657.

The spelling of 8981513 in words is "eight million, nine hundred eighty-one thousand, five hundred thirteen".