7940845 has 8 divisors (see below), whose sum is σ = 10395360. Its totient is φ = 5775120.

The previous prime is 7940833. The next prime is 7940851. The reversal of 7940845 is 5480497.

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

It is not a de Polignac number, because 7940845 - 2⁵ = 7940813 is a prime.

7940845 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72135 + ... + 72244.

It is an arithmetic number, because the mean of its divisors is an integer number (1299420).

Almost surely, 2^7940845 is an apocalyptic number.

It is an amenable number.

7940845 is a deficient number, since it is larger than the sum of its proper divisors (2454515).

7940845 is a wasteful number, since it uses less digits than its factorization.

7940845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144395.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 7940845 is about 2817.9504963714. The cubic root of 7940845 is about 199.5058216110.

The spelling of 7940845 in words is "seven million, nine hundred forty thousand, eight hundred forty-five".