890129 has 2 divisors, whose sum is σ = 890130. Its totient is φ = 890128.

The previous prime is 890119. The next prime is 890147. The reversal of 890129 is 921098.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 559504 + 330625 = 748^2 + 575^2 .

It is a cyclic number.

It is not a de Polignac number, because 890129 - 2⁸ = 889873 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (890119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445064 + 445065.

It is an arithmetic number, because the mean of its divisors is an integer number (445065).

2⁸⁹⁰¹²⁹ is an apocalyptic number.

It is an amenable number.

890129 is a deficient number, since it is larger than the sum of its proper divisors (1).

890129 is an equidigital number, since it uses as much as digits as its factorization.

890129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 890129 is about 943.4664805917. The cubic root of 890129 is about 96.1946643191.

It can be divided in two parts, 89012 and 9, that multiplied together give a palindrome (801108).

The spelling of 890129 in words is "eight hundred ninety thousand, one hundred twenty-nine".