40015559 has 2 divisors, whose sum is σ = 40015560. Its totient is φ = 40015558.

The previous prime is 40015543. The next prime is 40015571. The reversal of 40015559 is 95551004.

40015559 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40015559 - 2⁴ = 40015543 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 (40015519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20007779 + 20007780.

It is an arithmetic number, because the mean of its divisors is an integer number (20007780).

Almost surely, 2^40015559 is an apocalyptic number.

40015559 is a deficient number, since it is larger than the sum of its proper divisors (1).

40015559 is an equidigital number, since it uses as much as digits as its factorization.

40015559 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 40015559 is about 6325.7852476985. The cubic root of 40015559 is about 342.0395261135.

The spelling of 40015559 in words is "forty million, fifteen thousand, five hundred fifty-nine".