40903866 has 40 divisors (see below), whose sum is σ = 92717460. Its totient is φ = 13476672.

The previous prime is 40903861. The next prime is 40903883. The reversal of 40903866 is 66830904.

It can be written as a sum of positive squares in 2 ways, for example, as 32661225 + 8242641 = 5715^2 + 2871^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40903866.

It is not an unprimeable number, because it can be changed into a prime (40903861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13000 + ... + 15836.

Almost surely, 2^40903866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40903866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46358730).

40903866 is an abundant number, since it is smaller than the sum of its proper divisors (51813594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40903866 is a wasteful number, since it uses less digits than its factorization.

40903866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2940 (or 2931 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 40903866 is about 6395.6130276933. The cubic root of 40903866 is about 344.5520083147.

The spelling of 40903866 in words is "forty million, nine hundred three thousand, eight hundred sixty-six".