890101129 has 2 divisors, whose sum is σ = 890101130. Its totient is φ = 890101128.

The previous prime is 890101123. The next prime is 890101153. The reversal of 890101129 is 921101098.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 508953600 + 381147529 = 22560^2 + 19523^2 .

It is a cyclic number.

It is not a de Polignac number, because 890101129 - 2¹⁹ = 889576841 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 890101129.

It is not a weakly prime, because it can be changed into another prime (890101123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445050564 + 445050565.

It is an arithmetic number, because the mean of its divisors is an integer number (445050565).

Almost surely, 2^890101129 is an apocalyptic number.

It is an amenable number.

890101129 is a deficient number, since it is larger than the sum of its proper divisors (1).

890101129 is an equidigital number, since it uses as much as digits as its factorization.

890101129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 31.

The square root of 890101129 is about 29834.5626580984. The cubic root of 890101129 is about 961.9366031876.

Subtracting from 890101129 its sum of digits (31), we obtain a palindrome (890101098).

The spelling of 890101129 in words is "eight hundred ninety million, one hundred one thousand, one hundred twenty-nine".