84971237 has 12 divisors (see below), whose sum is σ = 92878380. Its totient is φ = 77267520.

The previous prime is 84971233. The next prime is 84971267. The reversal of 84971237 is 73217948.

It can be written as a sum of positive squares in 2 ways, for example, as 14394436 + 70576801 = 3794^2 + 8401^2 .

It is not a de Polignac number, because 84971237 - 2² = 84971233 is a prime.

It is a super-2 number, since 2×84971237² = 14440222234620338, which contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84971194 and 84971203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84971233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 313412 + ... + 313682.

It is an arithmetic number, because the mean of its divisors is an integer number (7739865).

Almost surely, 2^84971237 is an apocalyptic number.

It is an amenable number.

84971237 is a deficient number, since it is larger than the sum of its proper divisors (7907143).

84971237 is an equidigital number, since it uses as much as digits as its factorization.

84971237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644 (or 373 counting only the distinct ones).

The product of its digits is 84672, while the sum is 41.

The square root of 84971237 is about 9217.9844326187. The cubic root of 84971237 is about 439.6333671062.

The spelling of 84971237 in words is "eighty-four million, nine hundred seventy-one thousand, two hundred thirty-seven".