8454989 has 4 divisors (see below), whose sum is σ = 8460924. Its totient is φ = 8449056.

The previous prime is 8454959. The next prime is 8455063. The reversal of 8454989 is 9894548.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2079364 + 6375625 = 1442^2 + 2525^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8454989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8454959) 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, 599 + ... + 4155.

It is an arithmetic number, because the mean of its divisors is an integer number (2115231).

Almost surely, 2^8454989 is an apocalyptic number.

It is an amenable number.

8454989 is a deficient number, since it is larger than the sum of its proper divisors (5935).

8454989 is a wasteful number, since it uses less digits than its factorization.

8454989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5934.

The product of its digits is 414720, while the sum is 47.

The square root of 8454989 is about 2907.7463782111. The cubic root of 8454989 is about 203.7218832819.

The spelling of 8454989 in words is "eight million, four hundred fifty-four thousand, nine hundred eighty-nine".