8991339 has 16 divisors (see below), whose sum is σ = 13927680. Its totient is φ = 5052960.

The previous prime is 8991319. The next prime is 8991347. The reversal of 8991339 is 9331998.

It is a happy number.

It is not a de Polignac number, because 8991339 - 2¹² = 8987243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8991339.

It is not an unprimeable number, because it can be changed into a prime (8991319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2229 + ... + 4790.

It is an arithmetic number, because the mean of its divisors is an integer number (870480).

Almost surely, 2^8991339 is an apocalyptic number.

8991339 is a deficient number, since it is larger than the sum of its proper divisors (4936341).

8991339 is a wasteful number, since it uses less digits than its factorization.

8991339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7090.

The product of its digits is 52488, while the sum is 42.

The square root of 8991339 is about 2998.5561525508. The cubic root of 8991339 is about 207.9416364234.

The spelling of 8991339 in words is "eight million, nine hundred ninety-one thousand, three hundred thirty-nine".