400004415 has 24 divisors (see below), whose sum is σ = 703111968. Its totient is φ = 210329280.

The previous prime is 400004399. The next prime is 400004419. The reversal of 400004415 is 514400004.

400004415 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 400004415 - 2⁴ = 400004399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400004419) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59404 + ... + 65793.

It is an arithmetic number, because the mean of its divisors is an integer number (29296332).

Almost surely, 2^400004415 is an apocalyptic number.

400004415 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

400004415 is a deficient number, since it is larger than the sum of its proper divisors (303107553).

400004415 is a wasteful number, since it uses less digits than its factorization.

400004415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125279 (or 125276 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 400004415 is about 20000.1103746954. The cubic root of 400004415 is about 736.8090105513.

Adding to 400004415 its reverse (514400004), we get a palindrome (914404419).

The spelling of 400004415 in words is "four hundred million, four thousand, four hundred fifteen".