40464425909 has 2 divisors, whose sum is σ = 40464425910. Its totient is φ = 40464425908.

The previous prime is 40464425887. The next prime is 40464425927. The reversal of 40464425909 is 90952446404.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20674126225 + 19790299684 = 143785^2 + 140678^2 .

It is a cyclic number.

It is not a de Polignac number, because 40464425909 - 2²⁸ = 40195990453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40464425509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20232212954 + 20232212955.

It is an arithmetic number, because the mean of its divisors is an integer number (20232212955).

Almost surely, 2^40464425909 is an apocalyptic number.

It is an amenable number.

40464425909 is a deficient number, since it is larger than the sum of its proper divisors (1).

40464425909 is an equidigital number, since it uses as much as digits as its factorization.

40464425909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1244160, while the sum is 47.

The spelling of 40464425909 in words is "forty billion, four hundred sixty-four million, four hundred twenty-five thousand, nine hundred nine".