40135004389 has 2 divisors, whose sum is σ = 40135004390. Its totient is φ = 40135004388.

The previous prime is 40135004359. The next prime is 40135004443. The reversal of 40135004389 is 98340053104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40006000225 + 129004164 = 200015^2 + 11358^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40135004389 is a prime.

It is a super-2 number, since 2×40135004389² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40135004359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20067502194 + 20067502195.

It is an arithmetic number, because the mean of its divisors is an integer number (20067502195).

Almost surely, 2^40135004389 is an apocalyptic number.

It is an amenable number.

40135004389 is a deficient number, since it is larger than the sum of its proper divisors (1).

40135004389 is an equidigital number, since it uses as much as digits as its factorization.

40135004389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 40135004389 in words is "forty billion, one hundred thirty-five million, four thousand, three hundred eighty-nine".