404340453487 has 2 divisors, whose sum is σ = 404340453488. Its totient is φ = 404340453486.

The previous prime is 404340453479. The next prime is 404340453551. The reversal of 404340453487 is 784354043404.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 404340453487 - 2³ = 404340453479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404340453887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202170226743 + 202170226744.

It is an arithmetic number, because the mean of its divisors is an integer number (202170226744).

Almost surely, 2^404340453487 is an apocalyptic number.

404340453487 is a deficient number, since it is larger than the sum of its proper divisors (1).

404340453487 is an equidigital number, since it uses as much as digits as its factorization.

404340453487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2580480, while the sum is 46.

The spelling of 404340453487 in words is "four hundred four billion, three hundred forty million, four hundred fifty-three thousand, four hundred eighty-seven".