890725229 has 2 divisors, whose sum is σ = 890725230. Its totient is φ = 890725228.

The previous prime is 890725211. The next prime is 890725271. The reversal of 890725229 is 922527098.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 686178025 + 204547204 = 26195^2 + 14302^2 .

It is a cyclic number.

It is not a de Polignac number, because 890725229 - 2⁸ = 890724973 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 890725229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (890725289) 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 as a sum of consecutive naturals, namely, 445362614 + 445362615.

It is an arithmetic number, because the mean of its divisors is an integer number (445362615).

Almost surely, 2^890725229 is an apocalyptic number.

It is an amenable number.

890725229 is a deficient number, since it is larger than the sum of its proper divisors (1).

890725229 is an equidigital number, since it uses as much as digits as its factorization.

890725229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 890725229 is about 29845.0201708761. The cubic root of 890725229 is about 962.1613732941.

The spelling of 890725229 in words is "eight hundred ninety million, seven hundred twenty-five thousand, two hundred twenty-nine".