409951603 has 2 divisors, whose sum is σ = 409951604. Its totient is φ = 409951602.

The previous prime is 409951567. The next prime is 409951613. The reversal of 409951603 is 306159904.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-409951603 is a prime.

It is not a weakly prime, because it can be changed into another prime (409951613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204975801 + 204975802.

It is an arithmetic number, because the mean of its divisors is an integer number (204975802).

Almost surely, 2^409951603 is an apocalyptic number.

409951603 is a deficient number, since it is larger than the sum of its proper divisors (1).

409951603 is an equidigital number, since it uses as much as digits as its factorization.

409951603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 409951603 is about 20247.2616173151. The cubic root of 409951603 is about 742.8666521553.

The spelling of 409951603 in words is "four hundred nine million, nine hundred fifty-one thousand, six hundred three".