890972127409 has 24 divisors (see below), whose sum is σ = 1164691725120. Its totient is φ = 674295187104.

The previous prime is 890972127391. The next prime is 890972127427. The reversal of 890972127409 is 904721279098.

It is an interprime number because it is at equal distance from previous prime (890972127391) and next prime (890972127427).

It is not a de Polignac number, because 890972127409 - 2¹⁷ = 890971996337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (890972127469) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 30391879 + ... + 30421180.

It is an arithmetic number, because the mean of its divisors is an integer number (48528821880).

Almost surely, 2^890972127409 is an apocalyptic number.

It is an amenable number.

890972127409 is a deficient number, since it is larger than the sum of its proper divisors (273719597711).

890972127409 is a wasteful number, since it uses less digits than its factorization.

890972127409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60813109 (or 60813102 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 58.

The spelling of 890972127409 in words is "eight hundred ninety billion, nine hundred seventy-two million, one hundred twenty-seven thousand, four hundred nine".