84983869 has 2 divisors, whose sum is σ = 84983870. Its totient is φ = 84983868.

The previous prime is 84983863. The next prime is 84983881. The reversal of 84983869 is 96838948.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52925625 + 32058244 = 7275^2 + 5662^2 .

It is a cyclic number.

It is not a de Polignac number, because 84983869 - 2³ = 84983861 is a prime.

It is a super-2 number, since 2×84983869² = 14444515980418322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84983861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42491934 + 42491935.

It is an arithmetic number, because the mean of its divisors is an integer number (42491935).

Almost surely, 2^84983869 is an apocalyptic number.

It is an amenable number.

84983869 is a deficient number, since it is larger than the sum of its proper divisors (1).

84983869 is an equidigital number, since it uses as much as digits as its factorization.

84983869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2985984, while the sum is 55.

The square root of 84983869 is about 9218.6695894798. The cubic root of 84983869 is about 439.6551516289.

The spelling of 84983869 in words is "eighty-four million, nine hundred eighty-three thousand, eight hundred sixty-nine".