40400430 has 32 divisors (see below), whose sum is σ = 110813184. Its totient is φ = 9234336.

The previous prime is 40400419. The next prime is 40400431. The reversal of 40400430 is 3400404.

40400430 is digitally balanced in base 2, 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 (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40400431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95982 + ... + 96401.

It is an arithmetic number, because the mean of its divisors is an integer number (3462912).

Almost surely, 2^40400430 is an apocalyptic number.

40400430 is an abundant number, since it is smaller than the sum of its proper divisors (70412754).

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

40400430 is a wasteful number, since it uses less digits than its factorization.

40400430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192400.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 40400430 is about 6356.1332585150. The cubic root of 40400430 is about 343.1326117004.

Adding to 40400430 its reverse (3400404), we get a palindrome (43800834).

The spelling of 40400430 in words is "forty million, four hundred thousand, four hundred thirty".