400983563 has 2 divisors, whose sum is σ = 400983564. Its totient is φ = 400983562.

The previous prime is 400983523. The next prime is 400983589. The reversal of 400983563 is 365389004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400983563 - 2¹⁴ = 400967179 is a prime.

It is a Chen prime.

It is equal to p_21385955 and since 400983563 and 21385955 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (400983503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200491781 + 200491782.

It is an arithmetic number, because the mean of its divisors is an integer number (200491782).

Almost surely, 2^400983563 is an apocalyptic number.

400983563 is a deficient number, since it is larger than the sum of its proper divisors (1).

400983563 is an equidigital number, since it uses as much as digits as its factorization.

400983563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 400983563 is about 20024.5739779901. The cubic root of 400983563 is about 737.4097182600.

The spelling of 400983563 in words is "four hundred million, nine hundred eighty-three thousand, five hundred sixty-three".