405386783423 has 4 divisors (see below), whose sum is σ = 407814249360. Its totient is φ = 402959317488.

The previous prime is 405386783419. The next prime is 405386783489. The reversal of 405386783423 is 324387683504.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 405386783423 - 2² = 405386783419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405386773423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1213732718 + ... + 1213733051.

It is an arithmetic number, because the mean of its divisors is an integer number (101953562340).

Almost surely, 2^405386783423 is an apocalyptic number.

405386783423 is a deficient number, since it is larger than the sum of its proper divisors (2427465937).

405386783423 is a wasteful number, since it uses less digits than its factorization.

405386783423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2427465936.

The product of its (nonzero) digits is 11612160, while the sum is 53.

The spelling of 405386783423 in words is "four hundred five billion, three hundred eighty-six million, seven hundred eighty-three thousand, four hundred twenty-three".