13559890 has 8 divisors (see below), whose sum is σ = 24407820. Its totient is φ = 5423952.

The previous prime is 13559879. The next prime is 13559893. The reversal of 13559890 is 9895531.

13559890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 13198689 + 361201 = 3633^2 + 601^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (13559893) 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, 677985 + ... + 678004.

Almost surely, 2^13559890 is an apocalyptic number.

13559890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13559890 is a deficient number, since it is larger than the sum of its proper divisors (10847930).

13559890 is a wasteful number, since it uses less digits than its factorization.

13559890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355996.

The product of its (nonzero) digits is 48600, while the sum is 40.

The square root of 13559890 is about 3682.3755919243. The cubic root of 13559890 is about 238.4617474584.

It can be divided in two parts, 135 and 59890, that added together give a square (60025 = 245²).

The spelling of 13559890 in words is "thirteen million, five hundred fifty-nine thousand, eight hundred ninety".