40430537449 has 2 divisors, whose sum is σ = 40430537450. Its totient is φ = 40430537448.

The previous prime is 40430537443. The next prime is 40430537491. The reversal of 40430537449 is 94473503404.

40430537449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27062553049 + 13367984400 = 164507^2 + 115620^2 .

It is a cyclic number.

It is not a de Polignac number, because 40430537449 - 2¹³ = 40430529257 is a prime.

It is not a weakly prime, because it can be changed into another prime (40430537443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20215268724 + 20215268725.

It is an arithmetic number, because the mean of its divisors is an integer number (20215268725).

Almost surely, 2^40430537449 is an apocalyptic number.

It is an amenable number.

40430537449 is a deficient number, since it is larger than the sum of its proper divisors (1).

40430537449 is an equidigital number, since it uses as much as digits as its factorization.

40430537449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 43.

The spelling of 40430537449 in words is "forty billion, four hundred thirty million, five hundred thirty-seven thousand, four hundred forty-nine".