40583381 has 4 divisors (see below), whose sum is σ = 40611552. Its totient is φ = 40555212.

The previous prime is 40583363. The next prime is 40583393. The reversal of 40583381 is 18338504.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-40583381 is a prime.

It is a super-2 number, since 2×40583381² = 3294021626782322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40583311) 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, 11801 + ... + 14846.

It is an arithmetic number, because the mean of its divisors is an integer number (10152888).

Almost surely, 2^40583381 is an apocalyptic number.

It is an amenable number.

40583381 is a deficient number, since it is larger than the sum of its proper divisors (28171).

40583381 is a wasteful number, since it uses less digits than its factorization.

40583381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28170.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 40583381 is about 6370.5086924044. The cubic root of 40583381 is about 343.6497838549.

The spelling of 40583381 in words is "forty million, five hundred eighty-three thousand, three hundred eighty-one".