8461945 has 8 divisors (see below), whose sum is σ = 10232640. Its totient is φ = 6717360.

The previous prime is 8461913. The next prime is 8461951. The reversal of 8461945 is 5491648.

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 8461945 - 2⁵ = 8461913 is a prime.

It is an Ulam number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5805 + ... + 7114.

It is an arithmetic number, because the mean of its divisors is an integer number (1279080).

Almost surely, 2^8461945 is an apocalyptic number.

It is an amenable number.

8461945 is a deficient number, since it is larger than the sum of its proper divisors (1770695).

8461945 is a wasteful number, since it uses less digits than its factorization.

8461945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13055.

The product of its digits is 34560, while the sum is 37.

The square root of 8461945 is about 2908.9422476220. The cubic root of 8461945 is about 203.7777359459. Note that the first 4 decimals are identical.

The spelling of 8461945 in words is "eight million, four hundred sixty-one thousand, nine hundred forty-five".