40409753 has 2 divisors, whose sum is σ = 40409754. Its totient is φ = 40409752.

The previous prime is 40409729. The next prime is 40409773. The reversal of 40409753 is 35790404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35378704 + 5031049 = 5948^2 + 2243^2 .

It is a cyclic number.

It is not a de Polignac number, because 40409753 - 2⁸ = 40409497 is a prime.

It is not a weakly prime, because it can be changed into another prime (40409773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20204876 + 20204877.

It is an arithmetic number, because the mean of its divisors is an integer number (20204877).

Almost surely, 2^40409753 is an apocalyptic number.

It is an amenable number.

40409753 is a deficient number, since it is larger than the sum of its proper divisors (1).

40409753 is an equidigital number, since it uses as much as digits as its factorization.

40409753 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 40409753 is about 6356.8666023443. The cubic root of 40409753 is about 343.1590039879.

The spelling of 40409753 in words is "forty million, four hundred nine thousand, seven hundred fifty-three".