40003850 has 12 divisors (see below), whose sum is σ = 74407254. Its totient is φ = 16001520.

The previous prime is 40003819. The next prime is 40003883. The reversal of 40003850 is 5830004.

It can be written as a sum of positive squares in 3 ways, for example, as 38800441 + 1203409 = 6229^2 + 1097^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 399989 + ... + 400088.

Almost surely, 2^40003850 is an apocalyptic number.

40003850 is a deficient number, since it is larger than the sum of its proper divisors (34403404).

40003850 is a wasteful number, since it uses less digits than its factorization.

40003850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800089 (or 800084 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 40003850 is about 6324.8596822380. The cubic root of 40003850 is about 342.0061613290.

Adding to 40003850 its reverse (5830004), we get a palindrome (45833854).

The spelling of 40003850 in words is "forty million, three thousand, eight hundred fifty".