400001413321 has 4 divisors (see below), whose sum is σ = 400071386052. Its totient is φ = 399931440592.

The previous prime is 400001413313. The next prime is 400001413327. The reversal of 400001413321 is 123314100004.

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

It can be written as a sum of positive squares in 2 ways, for example, as 257373582400 + 142627830921 = 507320^2 + 377661^2 .

It is a cyclic number.

It is not a de Polignac number, because 400001413321 - 2³ = 400001413313 is a prime.

It is a super-2 number, since 2×400001413321² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400001413327) 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, 34977790 + ... + 34989223.

It is an arithmetic number, because the mean of its divisors is an integer number (100017846513).

Almost surely, 2^400001413321 is an apocalyptic number.

It is an amenable number.

400001413321 is a deficient number, since it is larger than the sum of its proper divisors (69972731).

400001413321 is an equidigital number, since it uses as much as digits as its factorization.

400001413321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69972730.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 400001413321 its reverse (123314100004), we get a palindrome (523315513325).

The spelling of 400001413321 in words is "four hundred billion, one million, four hundred thirteen thousand, three hundred twenty-one".