40905868 has 48 divisors (see below), whose sum is σ = 78369984. Its totient is φ = 18627840.

The previous prime is 40905827. The next prime is 40905881. The reversal of 40905868 is 86850904.

It is a self number, because there is not a number n which added to its sum of digits gives 40905868.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207546 + ... + 207742.

It is an arithmetic number, because the mean of its divisors is an integer number (1632708).

Almost surely, 2^40905868 is an apocalyptic number.

It is an amenable number.

40905868 is a deficient number, since it is larger than the sum of its proper divisors (37464116).

40905868 is a wasteful number, since it uses less digits than its factorization.

40905868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322 (or 320 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 40905868 is about 6395.7695393127. The cubic root of 40905868 is about 344.5576294775.

The spelling of 40905868 in words is "forty million, nine hundred five thousand, eight hundred sixty-eight".