40040007858 has 16 divisors (see below), whose sum is σ = 88977795360. Its totient is φ = 13346669268.

The previous prime is 40040007857. The next prime is 40040007899. The reversal of 40040007858 is 85870004004.

It is not an unprimeable number, because it can be changed into a prime (40040007857) 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, 370740760 + ... + 370740867.

It is an arithmetic number, because the mean of its divisors is an integer number (5561112210).

Almost surely, 2^40040007858 is an apocalyptic number.

40040007858 is an abundant number, since it is smaller than the sum of its proper divisors (48937787502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40040007858 is a wasteful number, since it uses less digits than its factorization.

40040007858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741481638 (or 741481632 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The spelling of 40040007858 in words is "forty billion, forty million, seven thousand, eight hundred fifty-eight".