7898444 has 12 divisors (see below), whose sum is σ = 14116704. Its totient is φ = 3865104.

The previous prime is 7898417. The next prime is 7898447. The reversal of 7898444 is 4448987.

It is a super-2 number, since 2×7898444² = 124770835242272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7898395 and 7898404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7898447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20819 + ... + 21194.

It is an arithmetic number, because the mean of its divisors is an integer number (1176392).

Almost surely, 2^7898444 is an apocalyptic number.

It is an amenable number.

7898444 is a deficient number, since it is larger than the sum of its proper divisors (6218260).

7898444 is a wasteful number, since it uses less digits than its factorization.

7898444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42064 (or 42062 counting only the distinct ones).

The product of its digits is 258048, while the sum is 44.

The square root of 7898444 is about 2810.4170509019. The cubic root of 7898444 is about 199.1500934100.

The spelling of 7898444 in words is "seven million, eight hundred ninety-eight thousand, four hundred forty-four".