40983791 has 4 divisors (see below), whose sum is σ = 41259000. Its totient is φ = 40708584.

The previous prime is 40983781. The next prime is 40983797. The reversal of 40983791 is 19738904.

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 40983791 - 2⁶ = 40983727 is a prime.

It is a super-2 number, since 2×40983791² = 3359342249463362, which contains 22 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 (40983797) 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, 137381 + ... + 137678.

It is an arithmetic number, because the mean of its divisors is an integer number (10314750).

Almost surely, 2^40983791 is an apocalyptic number.

40983791 is a deficient number, since it is larger than the sum of its proper divisors (275209).

40983791 is a wasteful number, since it uses less digits than its factorization.

40983791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275208.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 40983791 is about 6401.8584020580. The cubic root of 40983791 is about 344.7762772738.

The spelling of 40983791 in words is "forty million, nine hundred eighty-three thousand, seven hundred ninety-one".