13439898 has 16 divisors (see below), whose sum is σ = 29866560. Its totient is φ = 4479948.

The previous prime is 13439893. The next prime is 13439929. The reversal of 13439898 is 89893431.

13439898 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (13439891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124390 + ... + 124497.

It is an arithmetic number, because the mean of its divisors is an integer number (1866660).

Almost surely, 2^13439898 is an apocalyptic number.

13439898 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13439898 is an abundant number, since it is smaller than the sum of its proper divisors (16426662).

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

13439898 is a wasteful number, since it uses less digits than its factorization.

13439898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248898 (or 248892 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 13439898 is about 3666.0466445478. The cubic root of 13439898 is about 237.7562766407.

The spelling of 13439898 in words is "thirteen million, four hundred thirty-nine thousand, eight hundred ninety-eight".