84863477 has 2 divisors, whose sum is σ = 84863478. Its totient is φ = 84863476.

The previous prime is 84863447. The next prime is 84863489. The reversal of 84863477 is 77436848.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81884401 + 2979076 = 9049^2 + 1726^2 .

It is a cyclic number.

It is not a de Polignac number, because 84863477 - 2⁶ = 84863413 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84863447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42431738 + 42431739.

It is an arithmetic number, because the mean of its divisors is an integer number (42431739).

Almost surely, 2^84863477 is an apocalyptic number.

It is an amenable number.

84863477 is a deficient number, since it is larger than the sum of its proper divisors (1).

84863477 is an equidigital number, since it uses as much as digits as its factorization.

84863477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 903168, while the sum is 47.

The square root of 84863477 is about 9212.1374826910. The cubic root of 84863477 is about 439.4474417105.

The spelling of 84863477 in words is "eighty-four million, eight hundred sixty-three thousand, four hundred seventy-seven".