40040135446 has 4 divisors (see below), whose sum is σ = 60060203172. Its totient is φ = 20020067722.

The previous prime is 40040135441. The next prime is 40040135477. The reversal of 40040135446 is 64453104004.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40040135441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010033860 + ... + 10010033863.

It is an arithmetic number, because the mean of its divisors is an integer number (15015050793).

Almost surely, 2^40040135446 is an apocalyptic number.

40040135446 is a deficient number, since it is larger than the sum of its proper divisors (20020067726).

40040135446 is a wasteful number, since it uses less digits than its factorization.

40040135446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20020067725.

The product of its (nonzero) digits is 23040, while the sum is 31.

The spelling of 40040135446 in words is "forty billion, forty million, one hundred thirty-five thousand, four hundred forty-six".