7944975 has 18 divisors (see below), whose sum is σ = 14230736. Its totient is φ = 4237200.

The previous prime is 7944961. The next prime is 7944991. The reversal of 7944975 is 5794497.

It is not a de Polignac number, because 7944975 - 2⁵ = 7944943 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7944975.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 17431 + ... + 17880.

Almost surely, 2^7944975 is an apocalyptic number.

7944975 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

7944975 is a deficient number, since it is larger than the sum of its proper divisors (6285761).

7944975 is a wasteful number, since it uses less digits than its factorization.

7944975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35327 (or 35319 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 7944975 is about 2818.6832031997. The cubic root of 7944975 is about 199.5404029953.

It can be divided in two parts, 79449 and 75, that added together give a square (79524 = 282²).

The spelling of 7944975 in words is "seven million, nine hundred forty-four thousand, nine hundred seventy-five".