40038903 has 12 divisors (see below), whose sum is σ = 58925880. Its totient is φ = 26188656.

The previous prime is 40038839. The next prime is 40038907. The reversal of 40038903 is 30983004.

It is not a de Polignac number, because 40038903 - 2⁶ = 40038839 is a prime.

It is a super-2 number, since 2×40038903² = 3206227506886818, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40038907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41493 + ... + 42446.

It is an arithmetic number, because the mean of its divisors is an integer number (4910490).

Almost surely, 2^40038903 is an apocalyptic number.

40038903 is a deficient number, since it is larger than the sum of its proper divisors (18886977).

40038903 is a wasteful number, since it uses less digits than its factorization.

40038903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83998 (or 83995 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 40038903 is about 6327.6301250942. The cubic root of 40038903 is about 342.1060254014.

The spelling of 40038903 in words is "forty million, thirty-eight thousand, nine hundred three".