8042090449 has 2 divisors, whose sum is σ = 8042090450. Its totient is φ = 8042090448.

The previous prime is 8042090417. The next prime is 8042090491. The reversal of 8042090449 is 9440902408.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7855631424 + 186459025 = 88632^2 + 13655^2 .

It is a cyclic number.

It is not a de Polignac number, because 8042090449 - 2⁵ = 8042090417 is a prime.

It is not a weakly prime, because it can be changed into another prime (8042090249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4021045224 + 4021045225.

It is an arithmetic number, because the mean of its divisors is an integer number (4021045225).

Almost surely, 2^8042090449 is an apocalyptic number.

It is an amenable number.

8042090449 is a deficient number, since it is larger than the sum of its proper divisors (1).

8042090449 is an equidigital number, since it uses as much as digits as its factorization.

8042090449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 8042090449 is about 89677.7031875817. The cubic root of 8042090449 is about 2003.5014039247.

The spelling of 8042090449 in words is "eight billion, forty-two million, ninety thousand, four hundred forty-nine".