40404319 has 2 divisors, whose sum is σ = 40404320. Its totient is φ = 40404318.

The previous prime is 40404289. The next prime is 40404361. The reversal of 40404319 is 91340404.

It is a happy number.

40404319 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40404319 is a prime.

It is a super-2 number, since 2×40404319² = 3265017987707522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40404293 and 40404302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40404389) 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 as a sum of consecutive naturals, namely, 20202159 + 20202160.

It is an arithmetic number, because the mean of its divisors is an integer number (20202160).

Almost surely, 2^40404319 is an apocalyptic number.

40404319 is a deficient number, since it is larger than the sum of its proper divisors (1).

40404319 is an equidigital number, since it uses as much as digits as its factorization.

40404319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 40404319 is about 6356.4391761426. The cubic root of 40404319 is about 343.1436214835.

The spelling of 40404319 in words is "forty million, four hundred four thousand, three hundred nineteen".