84244131 has 10 divisors (see below), whose sum is σ = 125846292. Its totient is φ = 56162700.

The previous prime is 84244123. The next prime is 84244169. The reversal of 84244131 is 13144248.

It is not a de Polignac number, because 84244131 - 2³ = 84244123 is a prime.

It is a super-2 number, since 2×84244131² = 14194147215890322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 84244095 and 84244104.

It is not an unprimeable number, because it can be changed into a prime (84244031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 519945 + ... + 520106.

Almost surely, 2^84244131 is an apocalyptic number.

84244131 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

84244131 is a deficient number, since it is larger than the sum of its proper divisors (41602161).

84244131 is a wasteful number, since it uses less digits than its factorization.

84244131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040063 (or 1040054 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 84244131 is about 9178.4601649732. The cubic root of 84244131 is about 438.3757799675.

Adding to 84244131 its reverse (13144248), we get a palindrome (97388379).

The spelling of 84244131 in words is "eighty-four million, two hundred forty-four thousand, one hundred thirty-one".