40830917 has 4 divisors (see below), whose sum is σ = 41105100. Its totient is φ = 40556736.

The previous prime is 40830883. The next prime is 40830919. The reversal of 40830917 is 71903804.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12432676 + 28398241 = 3526^2 + 5329^2 .

It is a cyclic number.

It is not a de Polignac number, because 40830917 - 2⁸ = 40830661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40830919) 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, 136868 + ... + 137165.

It is an arithmetic number, because the mean of its divisors is an integer number (10276275).

Almost surely, 2^40830917 is an apocalyptic number.

It is an amenable number.

40830917 is a deficient number, since it is larger than the sum of its proper divisors (274183).

40830917 is a wasteful number, since it uses less digits than its factorization.

40830917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274182.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 40830917 is about 6389.9074328194. The cubic root of 40830917 is about 344.3470588099.

The spelling of 40830917 in words is "forty million, eight hundred thirty thousand, nine hundred seventeen".