400004322215 has 8 divisors (see below), whose sum is σ = 482492261328. Its totient is φ = 318345408000.

The previous prime is 400004322169. The next prime is 400004322217. The reversal of 400004322215 is 512223400004.

It is a happy number.

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

It is not a de Polignac number, because 400004322215 - 2²⁰ = 400003273639 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 (400004322217) 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, 207255161 + ... + 207257090.

It is an arithmetic number, because the mean of its divisors is an integer number (60311532666).

Almost surely, 2^400004322215 is an apocalyptic number.

400004322215 is a deficient number, since it is larger than the sum of its proper divisors (82487939113).

400004322215 is a wasteful number, since it uses less digits than its factorization.

400004322215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414512449.

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 400004322215 its reverse (512223400004), we get a palindrome (912227722219).

The spelling of 400004322215 in words is "four hundred billion, four million, three hundred twenty-two thousand, two hundred fifteen".