8023404991949 has 2 divisors, whose sum is σ = 8023404991950. Its totient is φ = 8023404991948.

The previous prime is 8023404991913. The next prime is 8023404991991. The reversal of 8023404991949 is 9491994043208.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7536633655849 + 486771336100 = 2745293^2 + 697690^2 .

It is a cyclic number.

It is not a de Polignac number, because 8023404991949 - 2³⁶ = 7954685515213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8023404991891 and 8023404991900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8023404996949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4011702495974 + 4011702495975.

It is an arithmetic number, because the mean of its divisors is an integer number (4011702495975).

Almost surely, 2^{8023404991949} is an apocalyptic number.

It is an amenable number.

8023404991949 is a deficient number, since it is larger than the sum of its proper divisors (1).

8023404991949 is an equidigital number, since it uses as much as digits as its factorization.

8023404991949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20155392, while the sum is 62.

The spelling of 8023404991949 in words is "eight trillion, twenty-three billion, four hundred four million, nine hundred ninety-one thousand, nine hundred forty-nine".