84699997 has 2 divisors, whose sum is σ = 84699998. Its totient is φ = 84699996.

The previous prime is 84699971. The next prime is 84700003. The reversal of 84699997 is 79999648.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75585636 + 9114361 = 8694^2 + 3019^2 .

It is a cyclic number.

It is not a de Polignac number, because 84699997 - 2¹⁹ = 84175709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84699907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42349998 + 42349999.

It is an arithmetic number, because the mean of its divisors is an integer number (42349999).

Almost surely, 2^84699997 is an apocalyptic number.

It is an amenable number.

84699997 is a deficient number, since it is larger than the sum of its proper divisors (1).

84699997 is an equidigital number, since it uses as much as digits as its factorization.

84699997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8817984, while the sum is 61.

The square root of 84699997 is about 9203.2601288891. The cubic root of 84699997 is about 439.1650781980.

The spelling of 84699997 in words is "eighty-four million, six hundred ninety-nine thousand, nine hundred ninety-seven".