13779075 has 24 divisors (see below), whose sum is σ = 23342256. Its totient is φ = 7168000.

The previous prime is 13779071. The next prime is 13779091. The reversal of 13779075 is 57097731.

It is a happy number.

It is not a de Polignac number, because 13779075 - 2² = 13779071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13779071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 835 + ... + 5315.

It is an arithmetic number, because the mean of its divisors is an integer number (972594).

Almost surely, 2^13779075 is an apocalyptic number.

13779075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13779075 is a deficient number, since it is larger than the sum of its proper divisors (9563181).

13779075 is a wasteful number, since it uses less digits than its factorization.

13779075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4535 (or 4530 counting only the distinct ones).

The product of its (nonzero) digits is 46305, while the sum is 39.

The square root of 13779075 is about 3712.0176454322. The cubic root of 13779075 is about 239.7397352225.

The spelling of 13779075 in words is "thirteen million, seven hundred seventy-nine thousand, seventy-five".