8461931 has 4 divisors (see below), whose sum is σ = 8508864. Its totient is φ = 8415000.

The previous prime is 8461913. The next prime is 8461951. The reversal of 8461931 is 1391648.

It is a happy number.

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 8461931 - 2¹⁸ = 8199787 is a prime.

It is a super-2 number, since 2×8461931² = 143208552497522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8461951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23195 + ... + 23556.

It is an arithmetic number, because the mean of its divisors is an integer number (2127216).

Almost surely, 2^8461931 is an apocalyptic number.

8461931 is a deficient number, since it is larger than the sum of its proper divisors (46933).

8461931 is a wasteful number, since it uses less digits than its factorization.

8461931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46932.

The product of its digits is 5184, while the sum is 32.

The square root of 8461931 is about 2908.9398412480. The cubic root of 8461931 is about 203.7776235648. Note that the first 3 decimals are identical.

The spelling of 8461931 in words is "eight million, four hundred sixty-one thousand, nine hundred thirty-one".