889986497 has 4 divisors (see below), whose sum is σ = 894598020. Its totient is φ = 885374976.

The previous prime is 889986479. The next prime is 889986509. The reversal of 889986497 is 794689988.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 294431281 + 595555216 = 17159^2 + 24404^2 .

It is a cyclic number.

It is not a de Polignac number, because 889986497 - 2⁸ = 889986241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (889986457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2305472 + ... + 2305857.

It is an arithmetic number, because the mean of its divisors is an integer number (223649505).

Almost surely, 2^889986497 is an apocalyptic number.

It is an amenable number.

889986497 is a deficient number, since it is larger than the sum of its proper divisors (4611523).

889986497 is a wasteful number, since it uses less digits than its factorization.

889986497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4611522.

The product of its digits is 62705664, while the sum is 68.

The square root of 889986497 is about 29832.6414687000. The cubic root of 889986497 is about 961.8953069621.

The spelling of 889986497 in words is "eight hundred eighty-nine million, nine hundred eighty-six thousand, four hundred ninety-seven".