40134439 has 2 divisors, whose sum is σ = 40134440. Its totient is φ = 40134438.

The previous prime is 40134431. The next prime is 40134473. The reversal of 40134439 is 93443104.

40134439 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 not a de Polignac number, because 40134439 - 2³ = 40134431 is a prime.

It is a super-2 number, since 2×40134439² = 3221546387689442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40134431) 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, 20067219 + 20067220.

It is an arithmetic number, because the mean of its divisors is an integer number (20067220).

Almost surely, 2^40134439 is an apocalyptic number.

40134439 is a deficient number, since it is larger than the sum of its proper divisors (1).

40134439 is an equidigital number, since it uses as much as digits as its factorization.

40134439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 40134439 is about 6335.1747410786. The cubic root of 40134439 is about 342.3779066478.

It can be divided in two parts, 40 and 134439, that multiplied together give a triangular number (5377560 = T₃₂₇₉).

The spelling of 40134439 in words is "forty million, one hundred thirty-four thousand, four hundred thirty-nine".