7889442 has 24 divisors (see below), whose sum is σ = 17345328. Its totient is φ = 2390520.

The previous prime is 7889423. The next prime is 7889443. The reversal of 7889442 is 2449887.

It is a junction number, because it is equal to n+sod(n) for n = 7889394 and 7889403.

It is not an unprimeable number, because it can be changed into a prime (7889443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4708 + ... + 6159.

It is an arithmetic number, because the mean of its divisors is an integer number (722722).

Almost surely, 2^7889442 is an apocalyptic number.

7889442 is an abundant number, since it is smaller than the sum of its proper divisors (9455886).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7889442 is a wasteful number, since it uses less digits than its factorization.

7889442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10894 (or 10883 counting only the distinct ones).

The product of its digits is 129024, while the sum is 42.

The square root of 7889442 is about 2808.8150526512. The cubic root of 7889442 is about 199.0744063232.

The spelling of 7889442 in words is "seven million, eight hundred eighty-nine thousand, four hundred forty-two".