889040690 has 16 divisors (see below), whose sum is σ = 1601928792. Its totient is φ = 355248384.

The previous prime is 889040681. The next prime is 889040701. The reversal of 889040690 is 96040988.

It can be written as a sum of positive squares in 4 ways, for example, as 680844649 + 208196041 = 26093^2 + 14429^2 .

It is a super-2 number, since 2×889040690² = 1580786696951352200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35729 + ... + 55268.

Almost surely, 2^889040690 is an apocalyptic number.

889040690 is a deficient number, since it is larger than the sum of its proper divisors (712888102).

889040690 is a wasteful number, since it uses less digits than its factorization.

889040690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91981.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 889040690 is about 29816.7853733430. The cubic root of 889040690 is about 961.5544441946.

The spelling of 889040690 in words is "eight hundred eighty-nine million, forty thousand, six hundred ninety".