40419 has 10 divisors (see below), whose sum is σ = 60500.
Its totient is φ = 26892.
The previous prime is 40387. The next prime is 40423. The reversal of 40419 is 91404.
Subtracting from 40419 its sum of digits (18), we obtain a square (40401 = 2012).
It is not a de Polignac number, because 40419 - 25 = 40387 is a prime.
It is a super-2 number, since 2×404192 = 3267391122, which contains 22 as substring.
It is a Duffinian number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 40419.
It is not an unprimeable number, because it can be changed into a prime (40429) by changing a digit.
It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 169 + ... + 330.
It is an arithmetic number, because the mean of its divisors is an integer number (6050).
240419 is an apocalyptic number.
40419 is a deficient number, since it is larger than the sum of its proper divisors (20081).
40419 is an equidigital number, since it uses as much as digits as its factorization.
40419 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 511 (or 502 counting only the distinct ones).
The product of its (nonzero) digits is 144, while the sum is 18.
The square root of 40419 is about 201.0447711332.
The cubic root of 40419 is about 34.3185177119.
The spelling of 40419 in words is "forty thousand, four hundred nineteen".