40244189 has 2 divisors, whose sum is σ = 40244190. Its totient is φ = 40244188.

The previous prime is 40244177. The next prime is 40244207. The reversal of 40244189 is 98144204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23088025 + 17156164 = 4805^2 + 4142^2 .

It is a cyclic number.

It is not a de Polignac number, because 40244189 - 2¹² = 40240093 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 (40244989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20122094 + 20122095.

It is an arithmetic number, because the mean of its divisors is an integer number (20122095).

Almost surely, 2^40244189 is an apocalyptic number.

It is an amenable number.

40244189 is a deficient number, since it is larger than the sum of its proper divisors (1).

40244189 is an equidigital number, since it uses as much as digits as its factorization.

40244189 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 32.

The square root of 40244189 is about 6343.8307827369. The cubic root of 40244189 is about 342.6897068281.

The spelling of 40244189 in words is "forty million, two hundred forty-four thousand, one hundred eighty-nine".