400983503 has 2 divisors, whose sum is σ = 400983504. Its totient is φ = 400983502.

The previous prime is 400983431. The next prime is 400983509. The reversal of 400983503 is 305389004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400983503 - 2²⁴ = 384206287 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 400983503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400983509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200491751 + 200491752.

It is an arithmetic number, because the mean of its divisors is an integer number (200491752).

Almost surely, 2^400983503 is an apocalyptic number.

400983503 is a deficient number, since it is larger than the sum of its proper divisors (1).

400983503 is an equidigital number, since it uses as much as digits as its factorization.

400983503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 400983503 is about 20024.5724798309. The cubic root of 400983503 is about 737.4096814800.

The spelling of 400983503 in words is "four hundred million, nine hundred eighty-three thousand, five hundred three".