8399020477 has 2 divisors, whose sum is σ = 8399020478. Its totient is φ = 8399020476.

The previous prime is 8399020453. The next prime is 8399020481. The reversal of 8399020477 is 7740209938.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6192745636 + 2206274841 = 78694^2 + 46971^2 .

It is a cyclic number.

It is not a de Polignac number, because 8399020477 - 2⁷ = 8399020349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8399020477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8399020177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4199510238 + 4199510239.

It is an arithmetic number, because the mean of its divisors is an integer number (4199510239).

Almost surely, 2^8399020477 is an apocalyptic number.

It is an amenable number.

8399020477 is a deficient number, since it is larger than the sum of its proper divisors (1).

8399020477 is an equidigital number, since it uses as much as digits as its factorization.

8399020477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 762048, while the sum is 49.

The square root of 8399020477 is about 91646.1700072622. The cubic root of 8399020477 is about 2032.7136959861.

The spelling of 8399020477 in words is "eight billion, three hundred ninety-nine million, twenty thousand, four hundred seventy-seven".