7879442 has 4 divisors (see below), whose sum is σ = 11819166. Its totient is φ = 3939720.

The previous prime is 7879427. The next prime is 7879447. The reversal of 7879442 is 2449787.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4490161 + 3389281 = 2119^2 + 1841^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7879442.

It is not an unprimeable number, because it can be changed into a prime (7879447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1969859 + ... + 1969862.

Almost surely, 2^7879442 is an apocalyptic number.

7879442 is a deficient number, since it is larger than the sum of its proper divisors (3939724).

7879442 is a wasteful number, since it uses less digits than its factorization.

7879442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3939723.

The product of its digits is 112896, while the sum is 41.

The square root of 7879442 is about 2807.0343781293. The cubic root of 7879442 is about 198.9902607120.

The spelling of 7879442 in words is "seven million, eight hundred seventy-nine thousand, four hundred forty-two".