40544789 has 2 divisors, whose sum is σ = 40544790. Its totient is φ = 40544788.

The previous prime is 40544773. The next prime is 40544827. The reversal of 40544789 is 98744504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39627025 + 917764 = 6295^2 + 958^2 .

It is a cyclic number.

It is not a de Polignac number, because 40544789 - 2⁴ = 40544773 is a prime.

It is a Sophie Germain 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 (40544719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20272394 + 20272395.

It is an arithmetic number, because the mean of its divisors is an integer number (20272395).

Almost surely, 2^40544789 is an apocalyptic number.

It is an amenable number.

40544789 is a deficient number, since it is larger than the sum of its proper divisors (1).

40544789 is an equidigital number, since it uses as much as digits as its factorization.

40544789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 40544789 is about 6367.4790144923. The cubic root of 40544789 is about 343.5408202172.

The spelling of 40544789 in words is "forty million, five hundred forty-four thousand, seven hundred eighty-nine".