40844554789 has 2 divisors, whose sum is σ = 40844554790. Its totient is φ = 40844554788.

The previous prime is 40844554769. The next prime is 40844554831. The reversal of 40844554789 is 98745544804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38041381764 + 2803173025 = 195042^2 + 52945^2 .

It is a cyclic number.

It is not a de Polignac number, because 40844554789 - 2⁵ = 40844554757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40844554759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20422277394 + 20422277395.

It is an arithmetic number, because the mean of its divisors is an integer number (20422277395).

Almost surely, 2^40844554789 is an apocalyptic number.

It is an amenable number.

40844554789 is a deficient number, since it is larger than the sum of its proper divisors (1).

40844554789 is an equidigital number, since it uses as much as digits as its factorization.

40844554789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25804800, while the sum is 58.

The spelling of 40844554789 in words is "forty billion, eight hundred forty-four million, five hundred fifty-four thousand, seven hundred eighty-nine".