8978889 has 16 divisors (see below), whose sum is σ = 12312000. Its totient is φ = 5818176.

The previous prime is 8978869. The next prime is 8978891. The reversal of 8978889 is 9888798.

It is not a de Polignac number, because 8978889 - 2⁸ = 8978633 is a prime.

8978889 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8978869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23502 + ... + 23880.

It is an arithmetic number, because the mean of its divisors is an integer number (769500).

Almost surely, 2^8978889 is an apocalyptic number.

It is an amenable number.

8978889 is a deficient number, since it is larger than the sum of its proper divisors (3333111).

8978889 is a wasteful number, since it uses less digits than its factorization.

8978889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584.

The product of its digits is 2322432, while the sum is 57.

The square root of 8978889 is about 2996.4794342695. The cubic root of 8978889 is about 207.8456155303.

Subtracting 8978889 from its reverse (9888798), we obtain a palindrome (909909).

The spelling of 8978889 in words is "eight million, nine hundred seventy-eight thousand, eight hundred eighty-nine".