400321423 has 8 divisors (see below), whose sum is σ = 438486480. Its totient is φ = 363780480.

The previous prime is 400321421. The next prime is 400321487. The reversal of 400321423 is 324123004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400321423 - 2¹ = 400321421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 400321423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400321421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405513 + ... + 406498.

It is an arithmetic number, because the mean of its divisors is an integer number (54810810).

Almost surely, 2^400321423 is an apocalyptic number.

400321423 is a deficient number, since it is larger than the sum of its proper divisors (38165057).

400321423 is a wasteful number, since it uses less digits than its factorization.

400321423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812057.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 400321423 is about 20008.0339613866. The cubic root of 400321423 is about 737.0036022989.

Adding to 400321423 its reverse (324123004), we get a palindrome (724444427).

The spelling of 400321423 in words is "four hundred million, three hundred twenty-one thousand, four hundred twenty-three".