8354977489 has 2 divisors, whose sum is σ = 8354977490. Its totient is φ = 8354977488.

The previous prime is 8354977453. The next prime is 8354977661. The reversal of 8354977489 is 9847794538.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7040552464 + 1314425025 = 83908^2 + 36255^2 .

It is a cyclic number.

It is not a de Polignac number, because 8354977489 - 2⁷ = 8354977361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8354977489.

It is not a weakly prime, because it can be changed into another prime (8354977409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4177488744 + 4177488745.

It is an arithmetic number, because the mean of its divisors is an integer number (4177488745).

Almost surely, 2^8354977489 is an apocalyptic number.

It is an amenable number.

8354977489 is a deficient number, since it is larger than the sum of its proper divisors (1).

8354977489 is an equidigital number, since it uses as much as digits as its factorization.

8354977489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60963840, while the sum is 64.

The square root of 8354977489 is about 91405.5659629106. The cubic root of 8354977489 is about 2029.1544027634.

The spelling of 8354977489 in words is "eight billion, three hundred fifty-four million, nine hundred seventy-seven thousand, four hundred eighty-nine".