40430918 has 16 divisors (see below), whose sum is σ = 69037056. Its totient is φ = 17578440.

The previous prime is 40430911. The next prime is 40430921. The reversal of 40430918 is 81903404.

40430918 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40430911) 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, 39446 + ... + 40457.

It is an arithmetic number, because the mean of its divisors is an integer number (4314816).

Almost surely, 2^40430918 is an apocalyptic number.

40430918 is a deficient number, since it is larger than the sum of its proper divisors (28606138).

40430918 is a wasteful number, since it uses less digits than its factorization.

40430918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79939.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 40430918 is about 6358.5311196848. The cubic root of 40430918 is about 343.2189044833.

The spelling of 40430918 in words is "forty million, four hundred thirty thousand, nine hundred eighteen".