7894945 has 8 divisors (see below), whose sum is σ = 9615744. Its totient is φ = 6221424.

The previous prime is 7894921. The next prime is 7894961. The reversal of 7894945 is 5494987.

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

It is a cyclic number.

It is not a de Polignac number, because 7894945 - 2⁹ = 7894433 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7894895 and 7894904.

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, 11449 + ... + 12118.

It is an arithmetic number, because the mean of its divisors is an integer number (1201968).

Almost surely, 2^7894945 is an apocalyptic number.

It is an amenable number.

7894945 is a deficient number, since it is larger than the sum of its proper divisors (1720799).

7894945 is a wasteful number, since it uses less digits than its factorization.

7894945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23639.

The product of its digits is 362880, while the sum is 46.

The square root of 7894945 is about 2809.7944764698. The cubic root of 7894945 is about 199.1206813258.

The spelling of 7894945 in words is "seven million, eight hundred ninety-four thousand, nine hundred forty-five".