8344621477 has 2 divisors, whose sum is σ = 8344621478. Its totient is φ = 8344621476.

The previous prime is 8344621403. The next prime is 8344621589. The reversal of 8344621477 is 7741264438.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7077688641 + 1266932836 = 84129^2 + 35594^2 .

It is a cyclic number.

It is not a de Polignac number, because 8344621477 - 2⁷ = 8344621349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8344621177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4172310738 + 4172310739.

It is an arithmetic number, because the mean of its divisors is an integer number (4172310739).

Almost surely, 2^8344621477 is an apocalyptic number.

It is an amenable number.

8344621477 is a deficient number, since it is larger than the sum of its proper divisors (1).

8344621477 is an equidigital number, since it uses as much as digits as its factorization.

8344621477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 903168, while the sum is 46.

The square root of 8344621477 is about 91348.8997032805. The cubic root of 8344621477 is about 2028.3156757637.

The spelling of 8344621477 in words is "eight billion, three hundred forty-four million, six hundred twenty-one thousand, four hundred seventy-seven".