890342461 has 2 divisors, whose sum is σ = 890342462. Its totient is φ = 890342460.

The previous prime is 890342459. The next prime is 890342471. The reversal of 890342461 is 164243098.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 765573561 + 124768900 = 27669^2 + 11170^2 .

It is a cyclic number.

It is not a de Polignac number, because 890342461 - 2¹ = 890342459 is a prime.

Together with 890342459, it forms a pair of twin primes.

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 890342461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (890342471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445171230 + 445171231.

It is an arithmetic number, because the mean of its divisors is an integer number (445171231).

Almost surely, 2^890342461 is an apocalyptic number.

It is an amenable number.

890342461 is a deficient number, since it is larger than the sum of its proper divisors (1).

890342461 is an equidigital number, since it uses as much as digits as its factorization.

890342461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 890342461 is about 29838.6068877218. The cubic root of 890342461 is about 962.0235315524.

The spelling of 890342461 in words is "eight hundred ninety million, three hundred forty-two thousand, four hundred sixty-one".