400430115 has 64 divisors (see below), whose sum is σ = 768614400. Its totient is φ = 197188992.

The previous prime is 400430033. The next prime is 400430117. The reversal of 400430115 is 511034004.

It is a happy number.

It is not a de Polignac number, because 400430115 - 2⁸ = 400429859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400430117) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 87822 + ... + 92268.

It is an arithmetic number, because the mean of its divisors is an integer number (12009600).

Almost surely, 2^400430115 is an apocalyptic number.

400430115 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

400430115 is a deficient number, since it is larger than the sum of its proper divisors (368184285).

400430115 is a wasteful number, since it uses less digits than its factorization.

400430115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4513 (or 4507 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 400430115 is about 20010.7499859451. The cubic root of 400430115 is about 737.0702979940.

Adding to 400430115 its reverse (511034004), we get a palindrome (911464119).

The spelling of 400430115 in words is "four hundred million, four hundred thirty thousand, one hundred fifteen".