84161117 has 4 divisors (see below), whose sum is σ = 87820320. Its totient is φ = 80501916.

The previous prime is 84161111. The next prime is 84161123. The reversal of 84161117 is 71116148.

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 (84161111) and next prime (84161123).

It is a cyclic number.

It is not a de Polignac number, because 84161117 - 2²² = 79966813 is a prime.

It is a super-2 number, since 2×84161117² = 14166187229375378, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84161117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84161111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1829567 + ... + 1829612.

It is an arithmetic number, because the mean of its divisors is an integer number (21955080).

Almost surely, 2^84161117 is an apocalyptic number.

It is an amenable number.

84161117 is a deficient number, since it is larger than the sum of its proper divisors (3659203).

84161117 is a wasteful number, since it uses less digits than its factorization.

84161117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3659202.

The product of its digits is 1344, while the sum is 29.

The square root of 84161117 is about 9173.9368321348. The cubic root of 84161117 is about 438.2317411032.

The spelling of 84161117 in words is "eighty-four million, one hundred sixty-one thousand, one hundred seventeen".