40917919 has 4 divisors (see below), whose sum is σ = 46763344. Its totient is φ = 35072496.

The previous prime is 40917917. The next prime is 40917937. The reversal of 40917919 is 91971904.

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 40917919 - 2¹ = 40917917 is a prime.

It is a super-2 number, since 2×40917919² = 3348552190581122, 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 (40917913) 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, 2922702 + ... + 2922715.

It is an arithmetic number, because the mean of its divisors is an integer number (11690836).

Almost surely, 2^40917919 is an apocalyptic number.

40917919 is a deficient number, since it is larger than the sum of its proper divisors (5845425).

40917919 is an equidigital number, since it uses as much as digits as its factorization.

40917919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5845424.

The product of its (nonzero) digits is 20412, while the sum is 40.

The square root of 40917919 is about 6396.7115770527. The cubic root of 40917919 is about 344.5914620832.

The spelling of 40917919 in words is "forty million, nine hundred seventeen thousand, nine hundred nineteen".