40005914 has 16 divisors (see below), whose sum is σ = 66202920. Its totient is φ = 18013440.

The previous prime is 40005907. The next prime is 40005923. The reversal of 40005914 is 41950004.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5841889 + 34164025 = 2417^2 + 5845^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40005914.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17699 + ... + 19830.

Almost surely, 2^40005914 is an apocalyptic number.

40005914 is a deficient number, since it is larger than the sum of its proper divisors (26197006).

40005914 is a wasteful number, since it uses less digits than its factorization.

40005914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37585.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 40005914 is about 6325.0228458085. The cubic root of 40005914 is about 342.0120431677.

Adding to 40005914 its reverse (41950004), we get a palindrome (81955918).

The spelling of 40005914 in words is "forty million, five thousand, nine hundred fourteen".