7944778 has 8 divisors (see below), whose sum is σ = 11933568. Its totient is φ = 3966924.

The previous prime is 7944737. The next prime is 7944779. The reversal of 7944778 is 8774497.

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

It is not an unprimeable number, because it can be changed into a prime (7944779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 576 + ... + 4027.

It is an arithmetic number, because the mean of its divisors is an integer number (1491696).

Almost surely, 2^7944778 is an apocalyptic number.

7944778 is a deficient number, since it is larger than the sum of its proper divisors (3988790).

7944778 is a wasteful number, since it uses less digits than its factorization.

7944778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5468.

The product of its digits is 395136, while the sum is 46.

The square root of 7944778 is about 2818.6482575873. The cubic root of 7944778 is about 199.5387537439.

The spelling of 7944778 in words is "seven million, nine hundred forty-four thousand, seven hundred seventy-eight".