84731995 has 8 divisors (see below), whose sum is σ = 107659584. Its totient is φ = 63798144.

The previous prime is 84731981. The next prime is 84732007. The reversal of 84731995 is 59913748.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 84731995 - 2¹¹ = 84729947 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 498339 + ... + 498508.

It is an arithmetic number, because the mean of its divisors is an integer number (13457448).

Almost surely, 2^84731995 is an apocalyptic number.

84731995 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

84731995 is a deficient number, since it is larger than the sum of its proper divisors (22927589).

84731995 is a wasteful number, since it uses less digits than its factorization.

84731995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996869.

The product of its digits is 272160, while the sum is 46.

The square root of 84731995 is about 9204.9983704507. The cubic root of 84731995 is about 439.2203738905.

The spelling of 84731995 in words is "eighty-four million, seven hundred thirty-one thousand, nine hundred ninety-five".