8477389 has 2 divisors, whose sum is σ = 8477390. Its totient is φ = 8477388.

The previous prime is 8477341. The next prime is 8477393. The reversal of 8477389 is 9837748.

8477389 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7590025 + 887364 = 2755^2 + 942^2 .

It is a cyclic number.

It is not a de Polignac number, because 8477389 - 2²¹ = 6380237 is a prime.

It is a super-2 number, since 2×8477389² = 143732248514642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8477089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4238694 + 4238695.

It is an arithmetic number, because the mean of its divisors is an integer number (4238695).

Almost surely, 2^8477389 is an apocalyptic number.

It is an amenable number.

8477389 is a deficient number, since it is larger than the sum of its proper divisors (1).

8477389 is an equidigital number, since it uses as much as digits as its factorization.

8477389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 338688, while the sum is 46.

The square root of 8477389 is about 2911.5956106575. The cubic root of 8477389 is about 203.9016330194.

The spelling of 8477389 in words is "eight million, four hundred seventy-seven thousand, three hundred eighty-nine".