405669603 has 16 divisors (see below), whose sum is σ = 562799520. Its totient is φ = 259601664.

The previous prime is 405669599. The next prime is 405669613. The reversal of 405669603 is 306966504.

It is a happy number.

It is not a de Polignac number, because 405669603 - 2² = 405669599 is a prime.

It is not an unprimeable number, because it can be changed into a prime (405669613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1575 + ... + 28527.

It is an arithmetic number, because the mean of its divisors is an integer number (35174970).

Almost surely, 2^405669603 is an apocalyptic number.

405669603 is a deficient number, since it is larger than the sum of its proper divisors (157129917).

405669603 is a wasteful number, since it uses less digits than its factorization.

405669603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27158.

The product of its (nonzero) digits is 116640, while the sum is 39.

The square root of 405669603 is about 20141.2413470471. The cubic root of 405669603 is about 740.2711466791.

The spelling of 405669603 in words is "four hundred five million, six hundred sixty-nine thousand, six hundred three".