400004549963 has 2 divisors, whose sum is σ = 400004549964. Its totient is φ = 400004549962.

The previous prime is 400004549929. The next prime is 400004549977. The reversal of 400004549963 is 369945400004.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400004549963 - 2¹⁸ = 400004287819 is a prime.

It is a super-2 number, since 2×400004549963² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (400004549983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200002274981 + 200002274982.

It is an arithmetic number, because the mean of its divisors is an integer number (200002274982).

Almost surely, 2^400004549963 is an apocalyptic number.

400004549963 is a deficient number, since it is larger than the sum of its proper divisors (1).

400004549963 is an equidigital number, since it uses as much as digits as its factorization.

400004549963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 44.

Adding to 400004549963 its reverse (369945400004), we get a palindrome (769949949967).

The spelling of 400004549963 in words is "four hundred billion, four million, five hundred forty-nine thousand, nine hundred sixty-three".