43835828389 has 2 divisors, whose sum is σ = 43835828390. Its totient is φ = 43835828388.

The previous prime is 43835828369. The next prime is 43835828419. The reversal of 43835828389 is 98382853834.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26225211364 + 17610617025 = 161942^2 + 132705^2 .

It is a cyclic number.

It is not a de Polignac number, because 43835828389 - 2²⁹ = 43298957477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43835828369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21917914194 + 21917914195.

It is an arithmetic number, because the mean of its divisors is an integer number (21917914195).

Almost surely, 2^43835828389 is an apocalyptic number.

It is an amenable number.

43835828389 is a deficient number, since it is larger than the sum of its proper divisors (1).

43835828389 is an equidigital number, since it uses as much as digits as its factorization.

43835828389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39813120, while the sum is 61.

The spelling of 43835828389 in words is "forty-three billion, eight hundred thirty-five million, eight hundred twenty-eight thousand, three hundred eighty-nine".