694400089 has 2 divisors, whose sum is σ = 694400090. Its totient is φ = 694400088.

The previous prime is 694400039. The next prime is 694400101. The reversal of 694400089 is 980004496.

694400089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 535135689 + 159264400 = 23133^2 + 12620^2 .

It is a cyclic number.

It is not a de Polignac number, because 694400089 - 2²¹ = 692302937 is a prime.

It is not a weakly prime, because it can be changed into another prime (694400039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347200044 + 347200045.

It is an arithmetic number, because the mean of its divisors is an integer number (347200045).

Almost surely, 2^694400089 is an apocalyptic number.

It is an amenable number.

694400089 is a deficient number, since it is larger than the sum of its proper divisors (1).

694400089 is an equidigital number, since it uses as much as digits as its factorization.

694400089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 694400089 is about 26351.4722359112. The cubic root of 694400089 is about 885.5299533735.

The spelling of 694400089 in words is "six hundred ninety-four million, four hundred thousand, eighty-nine".