890140191 has 32 divisors (see below), whose sum is σ = 1258414080. Its totient is φ = 558959616.

The previous prime is 890140189. The next prime is 890140193. The reversal of 890140191 is 191041098.

It is an interprime number because it is at equal distance from previous prime (890140189) and next prime (890140193).

It is not a de Polignac number, because 890140191 - 2¹ = 890140189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (890140193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 505170 + ... + 506928.

It is an arithmetic number, because the mean of its divisors is an integer number (39325440).

Almost surely, 2^890140191 is an apocalyptic number.

890140191 is a deficient number, since it is larger than the sum of its proper divisors (368273889).

890140191 is a wasteful number, since it uses less digits than its factorization.

890140191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1943.

The product of its (nonzero) digits is 2592, while the sum is 33.

The square root of 890140191 is about 29835.2172943319. The cubic root of 890140191 is about 961.9506744793.

The spelling of 890140191 in words is "eight hundred ninety million, one hundred forty thousand, one hundred ninety-one".