84018377 has 2 divisors, whose sum is σ = 84018378. Its totient is φ = 84018376.

The previous prime is 84018373. The next prime is 84018383. The reversal of 84018377 is 77381048.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58049161 + 25969216 = 7619^2 + 5096^2 .

It is a cyclic number.

It is not a de Polignac number, because 84018377 - 2² = 84018373 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84018377.

It is not a weakly prime, because it can be changed into another prime (84018371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42009188 + 42009189.

It is an arithmetic number, because the mean of its divisors is an integer number (42009189).

Almost surely, 2^84018377 is an apocalyptic number.

It is an amenable number.

84018377 is a deficient number, since it is larger than the sum of its proper divisors (1).

84018377 is an equidigital number, since it uses as much as digits as its factorization.

84018377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 84018377 is about 9166.1538826271. The cubic root of 84018377 is about 437.9838491296.

The spelling of 84018377 in words is "eighty-four million, eighteen thousand, three hundred seventy-seven".