845487829 has 2 divisors, whose sum is σ = 845487830. Its totient is φ = 845487828.

The previous prime is 845487817. The next prime is 845487833. The reversal of 845487829 is 928784548.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 841870225 + 3617604 = 29015^2 + 1902^2 .

It is a cyclic number.

It is not a de Polignac number, because 845487829 - 2⁷ = 845487701 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 845487829.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (845487029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422743914 + 422743915.

It is an arithmetic number, because the mean of its divisors is an integer number (422743915).

Almost surely, 2^845487829 is an apocalyptic number.

It is an amenable number.

845487829 is a deficient number, since it is larger than the sum of its proper divisors (1).

845487829 is an equidigital number, since it uses as much as digits as its factorization.

845487829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5160960, while the sum is 55.

The square root of 845487829 is about 29077.2734106897. The cubic root of 845487829 is about 945.5890913727.

The spelling of 845487829 in words is "eight hundred forty-five million, four hundred eighty-seven thousand, eight hundred twenty-nine".