40409530 has 16 divisors (see below), whose sum is σ = 83128320. Its totient is φ = 13854672.

The previous prime is 40409503. The next prime is 40409531. The reversal of 40409530 is 3590404.

40409530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40409530² = 3265860229641800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40409495 and 40409504.

It is not an unprimeable number, because it can be changed into a prime (40409531) 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, 288570 + ... + 288709.

It is an arithmetic number, because the mean of its divisors is an integer number (5195520).

Almost surely, 2^40409530 is an apocalyptic number.

40409530 is an abundant number, since it is smaller than the sum of its proper divisors (42718790).

40409530 is a wasteful number, since it uses less digits than its factorization.

40409530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577293.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 40409530 is about 6356.8490622320. The cubic root of 40409530 is about 343.1583727492.

Adding to 40409530 its reverse (3590404), we get a palindrome (43999934).

The spelling of 40409530 in words is "forty million, four hundred nine thousand, five hundred thirty".