13438861 has 8 divisors (see below), whose sum is σ = 13992480. Its totient is φ = 12891312.

The previous prime is 13438853. The next prime is 13438889. The reversal of 13438861 is 16883431.

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

It is not a de Polignac number, because 13438861 - 2³ = 13438853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13438811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3306 + ... + 6148.

It is an arithmetic number, because the mean of its divisors is an integer number (1749060).

Almost surely, 2^13438861 is an apocalyptic number.

It is an amenable number.

13438861 is a deficient number, since it is larger than the sum of its proper divisors (553619).

13438861 is a wasteful number, since it uses less digits than its factorization.

13438861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3035.

The product of its digits is 13824, while the sum is 34.

The square root of 13438861 is about 3665.9052088127. The cubic root of 13438861 is about 237.7501615248.

The spelling of 13438861 in words is "thirteen million, four hundred thirty-eight thousand, eight hundred sixty-one".