40840004879 has 8 divisors (see below), whose sum is σ = 43007581680. Its totient is φ = 38674238400.

The previous prime is 40840004867. The next prime is 40840004911. The reversal of 40840004879 is 97840004804.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40840004879 - 2¹² = 40840000783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40840004279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406142 + ... + 496619.

It is an arithmetic number, because the mean of its divisors is an integer number (5375947710).

Almost surely, 2^40840004879 is an apocalyptic number.

40840004879 is a deficient number, since it is larger than the sum of its proper divisors (2167576801).

40840004879 is a wasteful number, since it uses less digits than its factorization.

40840004879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905161.

The product of its (nonzero) digits is 258048, while the sum is 44.

The spelling of 40840004879 in words is "forty billion, eight hundred forty million, four thousand, eight hundred seventy-nine".