94028821 has 2 divisors, whose sum is σ = 94028822. Its totient is φ = 94028820.

The previous prime is 94028813. The next prime is 94028827. The reversal of 94028821 is 12882049.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93876721 + 152100 = 9689^2 + 390^2 .

It is a cyclic number.

It is not a de Polignac number, because 94028821 - 2³ = 94028813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (94028827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47014410 + 47014411.

It is an arithmetic number, because the mean of its divisors is an integer number (47014411).

Almost surely, 2^94028821 is an apocalyptic number.

It is an amenable number.

94028821 is a deficient number, since it is larger than the sum of its proper divisors (1).

94028821 is an equidigital number, since it uses as much as digits as its factorization.

94028821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 94028821 is about 9696.8459305075. The cubic root of 94028821 is about 454.7300592599.

It can be divided in two parts, 94028 and 821, that added together give a palindrome (94849).

The spelling of 94028821 in words is "ninety-four million, twenty-eight thousand, eight hundred twenty-one".