84490117 has 4 divisors (see below), whose sum is σ = 84664096. Its totient is φ = 84316140.

The previous prime is 84490111. The next prime is 84490123. The reversal of 84490117 is 71109448.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (84490111) and next prime (84490123).

It is a cyclic number.

It is not a de Polignac number, because 84490117 - 2¹¹ = 84488069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84490111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86259 + ... + 87232.

It is an arithmetic number, because the mean of its divisors is an integer number (21166024).

Almost surely, 2^84490117 is an apocalyptic number.

It is an amenable number.

84490117 is a deficient number, since it is larger than the sum of its proper divisors (173979).

84490117 is a wasteful number, since it uses less digits than its factorization.

84490117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173978.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 84490117 is about 9191.8505753738. The cubic root of 84490117 is about 438.8020392113.

The spelling of 84490117 in words is "eighty-four million, four hundred ninety thousand, one hundred seventeen".