40065419 has 4 divisors (see below), whose sum is σ = 40078080. Its totient is φ = 40052760.

The previous prime is 40065409. The next prime is 40065427. The reversal of 40065419 is 91456004.

40065419 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40065419 is a prime.

It is a super-2 number, since 2×40065419² = 3210475599291122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40065391 and 40065400.

It is not an unprimeable number, because it can be changed into a prime (40065409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3077 + ... + 9465.

It is an arithmetic number, because the mean of its divisors is an integer number (10019520).

Almost surely, 2^40065419 is an apocalyptic number.

40065419 is a deficient number, since it is larger than the sum of its proper divisors (12661).

40065419 is an equidigital number, since it uses as much as digits as its factorization.

40065419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12660.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 40065419 is about 6329.7250335224. The cubic root of 40065419 is about 342.1815293149.

The spelling of 40065419 in words is "forty million, sixty-five thousand, four hundred nineteen".