40503881 has 4 divisors (see below), whose sum is σ = 44186064. Its totient is φ = 36821700.

The previous prime is 40503871. The next prime is 40503901. The reversal of 40503881 is 18830504.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40503881 - 2²² = 36309577 is a prime.

It is a super-2 number, since 2×40503881² = 3281128752124322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40503871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1841075 + ... + 1841096.

It is an arithmetic number, because the mean of its divisors is an integer number (11046516).

Almost surely, 2^40503881 is an apocalyptic number.

It is an amenable number.

40503881 is a deficient number, since it is larger than the sum of its proper divisors (3682183).

40503881 is a wasteful number, since it uses less digits than its factorization.

40503881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3682182.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 40503881 is about 6364.2659435319. The cubic root of 40503881 is about 343.4252418872.

The spelling of 40503881 in words is "forty million, five hundred three thousand, eight hundred eighty-one".