89747196449 has 2 divisors, whose sum is σ = 89747196450. Its totient is φ = 89747196448.

The previous prime is 89747196439. The next prime is 89747196499. The reversal of 89747196449 is 94469174798.

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., 81871521424 + 7875675025 = 286132^2 + 88745^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89747196449 is a prime.

It is not a weakly prime, because it can be changed into another prime (89747196439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44873598224 + 44873598225.

It is an arithmetic number, because the mean of its divisors is an integer number (44873598225).

Almost surely, 2^89747196449 is an apocalyptic number.

It is an amenable number.

89747196449 is a deficient number, since it is larger than the sum of its proper divisors (1).

89747196449 is an equidigital number, since it uses as much as digits as its factorization.

89747196449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 109734912, while the sum is 68.

The spelling of 89747196449 in words is "eighty-nine billion, seven hundred forty-seven million, one hundred ninety-six thousand, four hundred forty-nine".