889878497 has 2 divisors, whose sum is σ = 889878498. Its totient is φ = 889878496.

The previous prime is 889878461. The next prime is 889878557. The reversal of 889878497 is 794878988.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 816587776 + 73290721 = 28576^2 + 8561^2 .

It is a cyclic number.

It is not a de Polignac number, because 889878497 - 2¹⁶ = 889812961 is a prime.

It is not a weakly prime, because it can be changed into another prime (889874497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 444939248 + 444939249.

It is an arithmetic number, because the mean of its divisors is an integer number (444939249).

Almost surely, 2^889878497 is an apocalyptic number.

It is an amenable number.

889878497 is a deficient number, since it is larger than the sum of its proper divisors (1).

889878497 is an equidigital number, since it uses as much as digits as its factorization.

889878497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 65028096, while the sum is 68.

The square root of 889878497 is about 29830.8313159389. The cubic root of 889878497 is about 961.8563966731.

The spelling of 889878497 in words is "eight hundred eighty-nine million, eight hundred seventy-eight thousand, four hundred ninety-seven".