400003336669 has 2 divisors, whose sum is σ = 400003336670. Its totient is φ = 400003336668.

The previous prime is 400003336643. The next prime is 400003336709. The reversal of 400003336669 is 966633300004.

It is an a-pointer prime, because the next prime (400003336709) can be obtained adding 400003336669 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 303678144900 + 96325191769 = 551070^2 + 310363^2 .

It is a cyclic number.

It is not a de Polignac number, because 400003336669 - 2⁹ = 400003336157 is a prime.

It is a super-2 number, since 2×400003336669² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400003336169) 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, 200001668334 + 200001668335.

It is an arithmetic number, because the mean of its divisors is an integer number (200001668335).

Almost surely, 2^400003336669 is an apocalyptic number.

It is an amenable number.

400003336669 is a deficient number, since it is larger than the sum of its proper divisors (1).

400003336669 is an equidigital number, since it uses as much as digits as its factorization.

400003336669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 209952, while the sum is 40.

The spelling of 400003336669 in words is "four hundred billion, three million, three hundred thirty-six thousand, six hundred sixty-nine".