40556419 has 2 divisors, whose sum is σ = 40556420. Its totient is φ = 40556418.

The previous prime is 40556381. The next prime is 40556479. The reversal of 40556419 is 91465504.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40556419 - 2¹³ = 40548227 is a prime.

It is a super-2 number, since 2×40556419² = 3289646244207122, which contains 22 as substring.

It is equal to p_2465458 and since 40556419 and 2465458 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (40556479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20278209 + 20278210.

It is an arithmetic number, because the mean of its divisors is an integer number (20278210).

Almost surely, 2^40556419 is an apocalyptic number.

40556419 is a deficient number, since it is larger than the sum of its proper divisors (1).

40556419 is an equidigital number, since it uses as much as digits as its factorization.

40556419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 40556419 is about 6368.3921832751. The cubic root of 40556419 is about 343.5736645348.

The spelling of 40556419 in words is "forty million, five hundred fifty-six thousand, four hundred nineteen".