40134044789 has 2 divisors, whose sum is σ = 40134044790. Its totient is φ = 40134044788.

The previous prime is 40134044749. The next prime is 40134044801. The reversal of 40134044789 is 98744043104.

40134044789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23585280625 + 16548764164 = 153575^2 + 128642^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40134044789 is a prime.

It is a super-2 number, since 2×40134044789² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40134044719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20067022394 + 20067022395.

It is an arithmetic number, because the mean of its divisors is an integer number (20067022395).

Almost surely, 2^40134044789 is an apocalyptic number.

It is an amenable number.

40134044789 is a deficient number, since it is larger than the sum of its proper divisors (1).

40134044789 is an equidigital number, since it uses as much as digits as its factorization.

40134044789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 44.

The spelling of 40134044789 in words is "forty billion, one hundred thirty-four million, forty-four thousand, seven hundred eighty-nine".