405723803 has 2 divisors, whose sum is σ = 405723804. Its totient is φ = 405723802.

The previous prime is 405723797. The next prime is 405723809. The reversal of 405723803 is 308327504.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (405723797) and next prime (405723809).

It is a cyclic number.

It is not a de Polignac number, because 405723803 - 2¹⁸ = 405461659 is a prime.

It is a super-2 number, since 2×405723803² = 329223608641565618, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 405723803.

It is not a weakly prime, because it can be changed into another prime (405723809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202861901 + 202861902.

It is an arithmetic number, because the mean of its divisors is an integer number (202861902).

Almost surely, 2^405723803 is an apocalyptic number.

405723803 is a deficient number, since it is larger than the sum of its proper divisors (1).

405723803 is an equidigital number, since it uses as much as digits as its factorization.

405723803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 405723803 is about 20142.5868001109. The cubic root of 405723803 is about 740.3041134984.

The spelling of 405723803 in words is "four hundred five million, seven hundred twenty-three thousand, eight hundred three".