40418919 has 24 divisors (see below), whose sum is σ = 61850880. Its totient is φ = 26365176.

The previous prime is 40418899. The next prime is 40418923. The reversal of 40418919 is 91981404.

It is not a de Polignac number, because 40418919 - 2⁹ = 40418407 is a prime.

It is a super-2 number, since 2×40418919² = 3267378026257122, which contains 22 as substring.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40418969) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9652 + ... + 13190.

It is an arithmetic number, because the mean of its divisors is an integer number (2577120).

Almost surely, 2^40418919 is an apocalyptic number.

40418919 is a deficient number, since it is larger than the sum of its proper divisors (21431961).

40418919 is an equidigital number, since it uses as much as digits as its factorization.

40418919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3601 (or 3589 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 40418919 is about 6357.5875141440. The cubic root of 40418919 is about 343.1849478703.

The spelling of 40418919 in words is "forty million, four hundred eighteen thousand, nine hundred nineteen".