73406189 has 2 divisors, whose sum is σ = 73406190. Its totient is φ = 73406188.

The previous prime is 73406167. The next prime is 73406209. The reversal of 73406189 is 98160437.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71690089 + 1716100 = 8467^2 + 1310^2 .

It is a cyclic number.

It is not a de Polignac number, because 73406189 - 2⁸ = 73405933 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73408189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36703094 + 36703095.

It is an arithmetic number, because the mean of its divisors is an integer number (36703095).

Almost surely, 2^73406189 is an apocalyptic number.

It is an amenable number.

73406189 is a deficient number, since it is larger than the sum of its proper divisors (1).

73406189 is an equidigital number, since it uses as much as digits as its factorization.

73406189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 73406189 is about 8567.7411842329. The cubic root of 73406189 is about 418.7076468934.

The spelling of 73406189 in words is "seventy-three million, four hundred six thousand, one hundred eighty-nine".