13639798 has 16 divisors (see below), whose sum is σ = 21097440. Its totient is φ = 6609600.

The previous prime is 13639789. The next prime is 13639799. The reversal of 13639798 is 89793631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13639799) 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, 14383 + ... + 15301.

It is an arithmetic number, because the mean of its divisors is an integer number (1318590).

Almost surely, 2^13639798 is an apocalyptic number.

13639798 is a deficient number, since it is larger than the sum of its proper divisors (7457642).

13639798 is a wasteful number, since it uses less digits than its factorization.

13639798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143.

The product of its digits is 244944, while the sum is 46.

The square root of 13639798 is about 3693.2097151394. The cubic root of 13639798 is about 238.9292461674.

The spelling of 13639798 in words is "thirteen million, six hundred thirty-nine thousand, seven hundred ninety-eight".