40071885 has 16 divisors (see below), whose sum is σ = 73274496. Its totient is φ = 18318528.

The previous prime is 40071859. The next prime is 40071887. The reversal of 40071885 is 58817004.

It is a happy number.

It is not a de Polignac number, because 40071885 - 2¹⁰ = 40070861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40071887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190714 + ... + 190923.

It is an arithmetic number, because the mean of its divisors is an integer number (4579656).

Almost surely, 2^40071885 is an apocalyptic number.

It is an amenable number.

40071885 is a deficient number, since it is larger than the sum of its proper divisors (33202611).

40071885 is a wasteful number, since it uses less digits than its factorization.

40071885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381652.

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 40071885 is about 6330.2357775994. The cubic root of 40071885 is about 342.1999361006.

Adding to 40071885 its reverse (58817004), we get a palindrome (98888889).

The spelling of 40071885 in words is "forty million, seventy-one thousand, eight hundred eighty-five".