40486404449 has 2 divisors, whose sum is σ = 40486404450. Its totient is φ = 40486404448.

The previous prime is 40486404403. The next prime is 40486404463. The reversal of 40486404449 is 94440468404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23808490000 + 16677914449 = 154300^2 + 129143^2 .

It is a cyclic number.

It is not a de Polignac number, because 40486404449 - 2³² = 36191437153 is a prime.

It is not a weakly prime, because it can be changed into another prime (40486404149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20243202224 + 20243202225.

It is an arithmetic number, because the mean of its divisors is an integer number (20243202225).

Almost surely, 2^40486404449 is an apocalyptic number.

It is an amenable number.

40486404449 is a deficient number, since it is larger than the sum of its proper divisors (1).

40486404449 is an equidigital number, since it uses as much as digits as its factorization.

40486404449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1769472, while the sum is 47.

The spelling of 40486404449 in words is "forty billion, four hundred eighty-six million, four hundred four thousand, four hundred forty-nine".