7898900 has 18 divisors (see below), whose sum is σ = 17140830. Its totient is φ = 3159520.

The previous prime is 7898899. The next prime is 7898909. The reversal of 7898900 is 98987.

It can be written as a sum of positive squares in 3 ways, for example, as 1406596 + 6492304 = 1186^2 + 2548^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7898909) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39395 + ... + 39594.

Almost surely, 2^7898900 is an apocalyptic number.

It is an amenable number.

7898900 is an abundant number, since it is smaller than the sum of its proper divisors (9241930).

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

7898900 is a wasteful number, since it uses less digits than its factorization.

7898900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79003 (or 78996 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 7898900 is about 2810.4981764805. The cubic root of 7898900 is about 199.1539258397.

The spelling of 7898900 in words is "seven million, eight hundred ninety-eight thousand, nine hundred".