40280593 has 2 divisors, whose sum is σ = 40280594. Its totient is φ = 40280592.

The previous prime is 40280587. The next prime is 40280621. The reversal of 40280593 is 39508204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36869184 + 3411409 = 6072^2 + 1847^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40280593 is a prime.

It is not a weakly prime, because it can be changed into another prime (40280503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20140296 + 20140297.

It is an arithmetic number, because the mean of its divisors is an integer number (20140297).

Almost surely, 2^40280593 is an apocalyptic number.

It is an amenable number.

40280593 is a deficient number, since it is larger than the sum of its proper divisors (1).

40280593 is an equidigital number, since it uses as much as digits as its factorization.

40280593 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 40280593 is about 6346.6993784171. The cubic root of 40280593 is about 342.7930055209.

Adding to 40280593 its reverse (39508204), we get a palindrome (79788797).

The spelling of 40280593 in words is "forty million, two hundred eighty thousand, five hundred ninety-three".