84214969 has 2 divisors, whose sum is σ = 84214970. Its totient is φ = 84214968.

The previous prime is 84214909. The next prime is 84214981. The reversal of 84214969 is 96941248.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73324969 + 10890000 = 8563^2 + 3300^2 .

It is a cyclic number.

It is not a de Polignac number, because 84214969 - 2¹³ = 84206777 is a prime.

It is a super-2 number, since 2×84214969² = 14184322007341922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84214909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42107484 + 42107485.

It is an arithmetic number, because the mean of its divisors is an integer number (42107485).

Almost surely, 2^84214969 is an apocalyptic number.

It is an amenable number.

84214969 is a deficient number, since it is larger than the sum of its proper divisors (1).

84214969 is an equidigital number, since it uses as much as digits as its factorization.

84214969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 43.

The square root of 84214969 is about 9176.8714167738. The cubic root of 84214969 is about 438.3251913202.

The spelling of 84214969 in words is "eighty-four million, two hundred fourteen thousand, nine hundred sixty-nine".