40509593 has 2 divisors, whose sum is σ = 40509594. Its totient is φ = 40509592.

The previous prime is 40509587. The next prime is 40509641. The reversal of 40509593 is 39590504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36929929 + 3579664 = 6077^2 + 1892^2 .

It is a cyclic number.

It is not a de Polignac number, because 40509593 - 2¹⁴ = 40493209 is a prime.

It is not a weakly prime, because it can be changed into another prime (40509563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20254796 + 20254797.

It is an arithmetic number, because the mean of its divisors is an integer number (20254797).

Almost surely, 2^40509593 is an apocalyptic number.

It is an amenable number.

40509593 is a deficient number, since it is larger than the sum of its proper divisors (1).

40509593 is an equidigital number, since it uses as much as digits as its factorization.

40509593 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24300, while the sum is 35.

The square root of 40509593 is about 6364.7146833146. The cubic root of 40509593 is about 343.4413848075.

The spelling of 40509593 in words is "forty million, five hundred nine thousand, five hundred ninety-three".