43997079853 has 2 divisors, whose sum is σ = 43997079854. Its totient is φ = 43997079852.

The previous prime is 43997079781. The next prime is 43997079967. The reversal of 43997079853 is 35897079934.

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., 37420194249 + 6576885604 = 193443^2 + 81098^2 .

It is a cyclic number.

It is not a de Polignac number, because 43997079853 - 2¹⁷ = 43996948781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43997079253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21998539926 + 21998539927.

It is an arithmetic number, because the mean of its divisors is an integer number (21998539927).

Almost surely, 2^43997079853 is an apocalyptic number.

It is an amenable number.

43997079853 is a deficient number, since it is larger than the sum of its proper divisors (1).

43997079853 is an equidigital number, since it uses as much as digits as its factorization.

43997079853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51438240, while the sum is 64.

The spelling of 43997079853 in words is "forty-three billion, nine hundred ninety-seven million, seventy-nine thousand, eight hundred fifty-three".