400413324421423 has 4 divisors (see below), whose sum is σ = 400414401297720. Its totient is φ = 400412247545128.

The previous prime is 400413324421391. The next prime is 400413324421441. The reversal of 400413324421423 is 324124423314004.

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 400413324421423 - 2⁵ = 400413324421391 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 (400413324424423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537880213 + ... + 538624126.

It is an arithmetic number, because the mean of its divisors is an integer number (100103600324430).

Almost surely, 2^{400413324421423} is an apocalyptic number.

400413324421423 is a deficient number, since it is larger than the sum of its proper divisors (1076876297).

400413324421423 is a wasteful number, since it uses less digits than its factorization.

400413324421423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076876296.

The product of its (nonzero) digits is 221184, while the sum is 37.

Adding to 400413324421423 its reverse (324124423314004), we get a palindrome (724537747735427).

The spelling of 400413324421423 in words is "four hundred trillion, four hundred thirteen billion, three hundred twenty-four million, four hundred twenty-one thousand, four hundred twenty-three".