400447530 has 64 divisors (see below), whose sum is σ = 1220417280. Its totient is φ = 91530432.

The previous prime is 400447517. The next prime is 400447577. The reversal of 400447530 is 35744004.

400447530 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 400447494 and 400447503.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104049 + ... + 107828.

It is an arithmetic number, because the mean of its divisors is an integer number (19069020).

Almost surely, 2^400447530 is an apocalyptic number.

400447530 is an abundant number, since it is smaller than the sum of its proper divisors (819969750).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400447530 is a wasteful number, since it uses less digits than its factorization.

400447530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211900 (or 211894 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 400447530 is about 20011.1851223260. The cubic root of 400447530 is about 737.0809830821.

It can be divided in two parts, 40044 and 7530, that added together give a palindrome (47574).

The spelling of 400447530 in words is "four hundred million, four hundred forty-seven thousand, five hundred thirty".