43400370049 has 2 divisors, whose sum is σ = 43400370050. Its totient is φ = 43400370048.

The previous prime is 43400370029. The next prime is 43400370073. The reversal of 43400370049 is 94007300434.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43042971024 + 357399025 = 207468^2 + 18905^2 .

It is a cyclic number.

It is not a de Polignac number, because 43400370049 - 2⁵ = 43400370017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43400369996 and 43400370023.

It is not a weakly prime, because it can be changed into another prime (43400370029) 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, 21700185024 + 21700185025.

It is an arithmetic number, because the mean of its divisors is an integer number (21700185025).

Almost surely, 2^43400370049 is an apocalyptic number.

It is an amenable number.

43400370049 is a deficient number, since it is larger than the sum of its proper divisors (1).

43400370049 is an equidigital number, since it uses as much as digits as its factorization.

43400370049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 34.

It can be divided in two parts, 43400 and 370049, that added together give a square (413449 = 643²).

The spelling of 43400370049 in words is "forty-three billion, four hundred million, three hundred seventy thousand, forty-nine".