40415819 has 2 divisors, whose sum is σ = 40415820. Its totient is φ = 40415818.

The previous prime is 40415813. The next prime is 40415833. The reversal of 40415819 is 91851404.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40415819 is a prime.

It is a super-2 number, since 2×40415819² = 3266876850881522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40415813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20207909 + 20207910.

It is an arithmetic number, because the mean of its divisors is an integer number (20207910).

Almost surely, 2^40415819 is an apocalyptic number.

40415819 is a deficient number, since it is larger than the sum of its proper divisors (1).

40415819 is an equidigital number, since it uses as much as digits as its factorization.

40415819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 40415819 is about 6357.3437062975. The cubic root of 40415819 is about 343.1761739219.

The spelling of 40415819 in words is "forty million, four hundred fifteen thousand, eight hundred nineteen".