814405321 has 8 divisors (see below), whose sum is σ = 852344064. Its totient is φ = 776677440.

The previous prime is 814405283. The next prime is 814405357. The reversal of 814405321 is 123504418.

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 814405321 - 2²¹ = 812308169 is a prime.

It is a super-2 number, since 2×814405321² = 1326512053746226082, which contains 22 as substring.

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 814405321.

It is not an unprimeable number, because it can be changed into a prime (814405021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44785 + ... + 60286.

It is an arithmetic number, because the mean of its divisors is an integer number (106543008).

Almost surely, 2^814405321 is an apocalyptic number.

It is an amenable number.

814405321 is a deficient number, since it is larger than the sum of its proper divisors (37938743).

814405321 is a wasteful number, since it uses less digits than its factorization.

814405321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105431.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 814405321 is about 28537.7875982004. The cubic root of 814405321 is about 933.8566179397.

Adding to 814405321 its reverse (123504418), we get a palindrome (937909739).

It can be divided in two parts, 814405 and 321, that added together give a triangular number (814726 = T₁₂₇₆).

The spelling of 814405321 in words is "eight hundred fourteen million, four hundred five thousand, three hundred twenty-one".