408400048789 has 2 divisors, whose sum is σ = 408400048790. Its totient is φ = 408400048788.

The previous prime is 408400048769. The next prime is 408400048801. The reversal of 408400048789 is 987840004804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 404127204100 + 4272844689 = 635710^2 + 65367^2 .

It is a cyclic number.

It is not a de Polignac number, because 408400048789 - 2¹³ = 408400040597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (408400048769) 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, 204200024394 + 204200024395.

It is an arithmetic number, because the mean of its divisors is an integer number (204200024395).

Almost surely, 2^408400048789 is an apocalyptic number.

It is an amenable number.

408400048789 is a deficient number, since it is larger than the sum of its proper divisors (1).

408400048789 is an equidigital number, since it uses as much as digits as its factorization.

408400048789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2064384, while the sum is 52.

The spelling of 408400048789 in words is "four hundred eight billion, four hundred million, forty-eight thousand, seven hundred eighty-nine".