40855887 has 16 divisors (see below), whose sum is σ = 60994560. Its totient is φ = 27027000.

The previous prime is 40855883. The next prime is 40855897. The reversal of 40855887 is 78855804.

It is not a de Polignac number, because 40855887 - 2² = 40855883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40855883) 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, 2239 + ... + 9312.

It is an arithmetic number, because the mean of its divisors is an integer number (3812160).

Almost surely, 2^40855887 is an apocalyptic number.

40855887 is a deficient number, since it is larger than the sum of its proper divisors (20138673).

40855887 is a wasteful number, since it uses less digits than its factorization.

40855887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11691 (or 11685 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 45.

The square root of 40855887 is about 6391.8609966112. The cubic root of 40855887 is about 344.4172392395.

The spelling of 40855887 in words is "forty million, eight hundred fifty-five thousand, eight hundred eighty-seven".