45440189 has 2 divisors, whose sum is σ = 45440190. Its totient is φ = 45440188.

The previous prime is 45440183. The next prime is 45440233. The reversal of 45440189 is 98104454.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34164025 + 11276164 = 5845^2 + 3358^2 .

It is a cyclic number.

It is not a de Polignac number, because 45440189 - 2²⁴ = 28662973 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45440183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22720094 + 22720095.

It is an arithmetic number, because the mean of its divisors is an integer number (22720095).

Almost surely, 2^45440189 is an apocalyptic number.

It is an amenable number.

45440189 is a deficient number, since it is larger than the sum of its proper divisors (1).

45440189 is an equidigital number, since it uses as much as digits as its factorization.

45440189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 45440189 is about 6740.9338373848. The cubic root of 45440189 is about 356.8453509229.

The spelling of 45440189 in words is "forty-five million, four hundred forty thousand, one hundred eighty-nine".