40400030 has 16 divisors (see below), whose sum is σ = 79331184. Its totient is φ = 14690880.

The previous prime is 40400027. The next prime is 40400033. The reversal of 40400030 is 3000404.

40400030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40400027) and next prime (40400033).

It is a Harshad number since it is a multiple of its sum of digits (11).

It is a junction number, because it is equal to n+sod(n) for n = 40399984 and 40400020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40400033) 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 7 ways as a sum of consecutive naturals, for example, 183527 + ... + 183746.

It is an arithmetic number, because the mean of its divisors is an integer number (4958199).

Almost surely, 2^40400030 is an apocalyptic number.

40400030 is a deficient number, since it is larger than the sum of its proper divisors (38931154).

40400030 is a wasteful number, since it uses less digits than its factorization.

40400030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367291.

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 40400030 is about 6356.1017927658. The cubic root of 40400030 is about 343.1314792578.

Adding to 40400030 its reverse (3000404), we get a palindrome (43400434).

The spelling of 40400030 in words is "forty million, four hundred thousand, thirty".