8990647 has 4 divisors (see below), whose sum is σ = 9073240. Its totient is φ = 8908056.

The previous prime is 8990623. The next prime is 8990669. The reversal of 8990647 is 7460998.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7460998 = 2 ⋅3730499.

It is a cyclic number.

It is not a de Polignac number, because 8990647 - 2²³ = 602039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8990617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41133 + ... + 41350.

It is an arithmetic number, because the mean of its divisors is an integer number (2268310).

Almost surely, 2^8990647 is an apocalyptic number.

8990647 is a deficient number, since it is larger than the sum of its proper divisors (82593).

8990647 is a wasteful number, since it uses less digits than its factorization.

8990647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82592.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 8990647 is about 2998.4407614625. The cubic root of 8990647 is about 207.9363016857.

The spelling of 8990647 in words is "eight million, nine hundred ninety thousand, six hundred forty-seven".