400320115 has 8 divisors (see below), whose sum is σ = 517336848. Its totient is φ = 295620960.

The previous prime is 400320113. The next prime is 400320157. The reversal of 400320115 is 511023004.

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

It is not a de Polignac number, because 400320115 - 2¹ = 400320113 is a prime.

It is a super-5 number, since 5×400320115⁵ (a number of 44 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400320113) 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, 3079321 + ... + 3079450.

It is an arithmetic number, because the mean of its divisors is an integer number (64667106).

Almost surely, 2^400320115 is an apocalyptic number.

400320115 is a deficient number, since it is larger than the sum of its proper divisors (117016733).

400320115 is a wasteful number, since it uses less digits than its factorization.

400320115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6158789.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 400320115 is about 20008.0012744902. The cubic root of 400320115 is about 737.0027996091.

Adding to 400320115 its reverse (511023004), we get a palindrome (911343119).

The spelling of 400320115 in words is "four hundred million, three hundred twenty thousand, one hundred fifteen".