40667983 has 4 divisors (see below), whose sum is σ = 40800760. Its totient is φ = 40535208.

The previous prime is 40667971. The next prime is 40667987. The reversal of 40667983 is 38976604.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40667983 - 2¹⁷ = 40536911 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40667987) 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, 65928 + ... + 66541.

It is an arithmetic number, because the mean of its divisors is an integer number (10200190).

Almost surely, 2^40667983 is an apocalyptic number.

40667983 is a deficient number, since it is larger than the sum of its proper divisors (132777).

40667983 is a wasteful number, since it uses less digits than its factorization.

40667983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132776.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 40667983 is about 6377.1453645028. The cubic root of 40667983 is about 343.8884142091. Note that the first 3 decimals are identical.

The spelling of 40667983 in words is "forty million, six hundred sixty-seven thousand, nine hundred eighty-three".