84863931 has 8 divisors (see below), whose sum is σ = 114515520. Its totient is φ = 55894152.

The previous prime is 84863929. The next prime is 84863941. The reversal of 84863931 is 13936848.

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 84863931 - 2¹ = 84863929 is a prime.

It is a super-2 number, since 2×84863931² = 14403773569545522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84863941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170161 + ... + 170658.

It is an arithmetic number, because the mean of its divisors is an integer number (14314440).

Almost surely, 2^84863931 is an apocalyptic number.

84863931 is a deficient number, since it is larger than the sum of its proper divisors (29651589).

84863931 is a wasteful number, since it uses less digits than its factorization.

84863931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340905.

The product of its digits is 124416, while the sum is 42.

The square root of 84863931 is about 9212.1621240619. The cubic root of 84863931 is about 439.4482253565.

The spelling of 84863931 in words is "eighty-four million, eight hundred sixty-three thousand, nine hundred thirty-one".