13779538 has 8 divisors (see below), whose sum is σ = 20960640. Its totient is φ = 6792660.

The previous prime is 13779533. The next prime is 13779539. The reversal of 13779538 is 83597731.

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

It is a junction number, because it is equal to n+sod(n) for n = 13779494 and 13779503.

It is not an unprimeable number, because it can be changed into a prime (13779533) 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, 48378 + ... + 48661.

It is an arithmetic number, because the mean of its divisors is an integer number (2620080).

Almost surely, 2^13779538 is an apocalyptic number.

13779538 is a deficient number, since it is larger than the sum of its proper divisors (7181102).

13779538 is an equidigital number, since it uses as much as digits as its factorization.

13779538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97112.

The product of its digits is 158760, while the sum is 43.

The square root of 13779538 is about 3712.0800099136. The cubic root of 13779538 is about 239.7424204113.

The spelling of 13779538 in words is "thirteen million, seven hundred seventy-nine thousand, five hundred thirty-eight".