7944442 has 8 divisors (see below), whose sum is σ = 13000032. Its totient is φ = 3611100.

The previous prime is 7944439. The next prime is 7944473. The reversal of 7944442 is 2444497.

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

It is a super-2 number, since 2×7944442² = 126228317382728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7944398 and 7944407.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180534 + ... + 180577.

It is an arithmetic number, because the mean of its divisors is an integer number (1625004).

Almost surely, 2^7944442 is an apocalyptic number.

7944442 is a deficient number, since it is larger than the sum of its proper divisors (5055590).

7944442 is a wasteful number, since it uses less digits than its factorization.

7944442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361124.

The product of its digits is 32256, while the sum is 34.

The square root of 7944442 is about 2818.5886539188. The cubic root of 7944442 is about 199.5359407445.

Subtracting from 7944442 its reverse (2444497), we obtain a palindrome (5499945).

It can be divided in two parts, 79 and 44442, that added together give a square (44521 = 211²).

The spelling of 7944442 in words is "seven million, nine hundred forty-four thousand, four hundred forty-two".