40405583867 has 32 divisors (see below), whose sum is σ = 47216240064. Its totient is φ = 34169241600.

The previous prime is 40405583851. The next prime is 40405583879. The reversal of 40405583867 is 76838550404.

It is a cyclic number.

It is not a de Polignac number, because 40405583867 - 2⁴ = 40405583851 is a prime.

It is a super-2 number, since 2×40405583867² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40405583807) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25049153 + ... + 25050765.

It is an arithmetic number, because the mean of its divisors is an integer number (1475507502).

Almost surely, 2^40405583867 is an apocalyptic number.

40405583867 is a deficient number, since it is larger than the sum of its proper divisors (6810656197).

40405583867 is a wasteful number, since it uses less digits than its factorization.

40405583867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3119.

The product of its (nonzero) digits is 3225600, while the sum is 50.

The spelling of 40405583867 in words is "forty billion, four hundred five million, five hundred eighty-three thousand, eight hundred sixty-seven".