405340503 has 16 divisors (see below), whose sum is σ = 577601280. Its totient is φ = 251950976.

The previous prime is 405340493. The next prime is 405340517. The reversal of 405340503 is 305043504.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 405340503 - 2⁴ = 405340487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405340583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31683 + ... + 42596.

It is an arithmetic number, because the mean of its divisors is an integer number (36100080).

Almost surely, 2^405340503 is an apocalyptic number.

405340503 is a deficient number, since it is larger than the sum of its proper divisors (172260777).

405340503 is a wasteful number, since it uses less digits than its factorization.

405340503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74406.

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 405340503 is about 20133.0698851417. The cubic root of 405340503 is about 740.0709105410.

The spelling of 405340503 in words is "four hundred five million, three hundred forty thousand, five hundred three".