7899422 has 4 divisors (see below), whose sum is σ = 11849136. Its totient is φ = 3949710.

The previous prime is 7899413. The next prime is 7899443. The reversal of 7899422 is 2249987.

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

It is a self number, because there is not a number n which added to its sum of digits gives 7899422.

It is a congruent number.

It is an unprimeable number.

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, 1974854 + ... + 1974857.

It is an arithmetic number, because the mean of its divisors is an integer number (2962284).

Almost surely, 2^7899422 is an apocalyptic number.

7899422 is a deficient number, since it is larger than the sum of its proper divisors (3949714).

7899422 is a wasteful number, since it uses less digits than its factorization.

7899422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3949713.

The product of its digits is 72576, while the sum is 41.

The square root of 7899422 is about 2810.5910410446. The cubic root of 7899422 is about 199.1583127822.

The spelling of 7899422 in words is "seven million, eight hundred ninety-nine thousand, four hundred twenty-two".