405460243 has 4 divisors (see below), whose sum is σ = 405507888. Its totient is φ = 405412600.

The previous prime is 405460241. The next prime is 405460249. The reversal of 405460243 is 342064504.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 405460243 - 2¹ = 405460241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405460241) 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 3 ways as a sum of consecutive naturals, for example, 7183 + ... + 29368.

It is an arithmetic number, because the mean of its divisors is an integer number (101376972).

Almost surely, 2^405460243 is an apocalyptic number.

405460243 is a deficient number, since it is larger than the sum of its proper divisors (47645).

405460243 is a wasteful number, since it uses less digits than its factorization.

405460243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47644.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 405460243 is about 20136.0433799692. The cubic root of 405460243 is about 740.1437771521.

The spelling of 405460243 in words is "four hundred five million, four hundred sixty thousand, two hundred forty-three".