84974231 has 4 divisors (see below), whose sum is σ = 85850352. Its totient is φ = 84098112.

The previous prime is 84974221. The next prime is 84974243. The reversal of 84974231 is 13247948.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84974231 - 2²² = 80779927 is a prime.

It is a super-2 number, since 2×84974231² = 14441239868082722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84974221) 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, 437915 + ... + 438108.

It is an arithmetic number, because the mean of its divisors is an integer number (21462588).

Almost surely, 2^84974231 is an apocalyptic number.

84974231 is a deficient number, since it is larger than the sum of its proper divisors (876121).

84974231 is an equidigital number, since it uses as much as digits as its factorization.

84974231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876120.

The product of its digits is 48384, while the sum is 38.

The square root of 84974231 is about 9218.1468311152. The cubic root of 84974231 is about 439.6385306058.

The spelling of 84974231 in words is "eighty-four million, nine hundred seventy-four thousand, two hundred thirty-one".