73940189 has 2 divisors, whose sum is σ = 73940190. Its totient is φ = 73940188.

The previous prime is 73940161. The next prime is 73940203. The reversal of 73940189 is 98104937.

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., 71740900 + 2199289 = 8470^2 + 1483^2 .

It is a cyclic number.

It is not a de Polignac number, because 73940189 - 2²⁰ = 72891613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73940149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36970094 + 36970095.

It is an arithmetic number, because the mean of its divisors is an integer number (36970095).

Almost surely, 2^73940189 is an apocalyptic number.

It is an amenable number.

73940189 is a deficient number, since it is larger than the sum of its proper divisors (1).

73940189 is an equidigital number, since it uses as much as digits as its factorization.

73940189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 73940189 is about 8598.8481205334. The cubic root of 73940189 is about 419.7205037660.

The spelling of 73940189 in words is "seventy-three million, nine hundred forty thousand, one hundred eighty-nine".