890639041966 has 16 divisors (see below), whose sum is σ = 1343019051504. Its totient is φ = 442966500864.

The previous prime is 890639041949. The next prime is 890639041991. The reversal of 890639041966 is 669140936098.

It is a super-2 number, since 2×890639041966² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3797485 + ... + 4025191.

It is an arithmetic number, because the mean of its divisors is an integer number (83938690719).

Almost surely, 2^890639041966 is an apocalyptic number.

890639041966 is a deficient number, since it is larger than the sum of its proper divisors (452380009538).

890639041966 is a wasteful number, since it uses less digits than its factorization.

890639041966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238035.

The product of its (nonzero) digits is 15116544, while the sum is 61.

The spelling of 890639041966 in words is "eight hundred ninety billion, six hundred thirty-nine million, forty-one thousand, nine hundred sixty-six".