40983991 has 8 divisors (see below), whose sum is σ = 43519680. Its totient is φ = 38462208.

The previous prime is 40983977. The next prime is 40983997. The reversal of 40983991 is 19938904.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40983991 - 2⁹ = 40983479 is a prime.

It is a super-3 number, since 3×40983991³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40983997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2955 + ... + 9523.

It is an arithmetic number, because the mean of its divisors is an integer number (5439960).

Almost surely, 2^40983991 is an apocalyptic number.

40983991 is a deficient number, since it is larger than the sum of its proper divisors (2535689).

40983991 is a wasteful number, since it uses less digits than its factorization.

40983991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6953.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 40983991 is about 6401.8740225031. The cubic root of 40983991 is about 344.7768381064.

The spelling of 40983991 in words is "forty million, nine hundred eighty-three thousand, nine hundred ninety-one".