13959845 has 4 divisors (see below), whose sum is σ = 16751820. Its totient is φ = 11167872.

The previous prime is 13959833. The next prime is 13959871. The reversal of 13959845 is 54895931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54895931 = 4547 ⋅12073.

It can be written as a sum of positive squares in 2 ways, for example, as 1442401 + 12517444 = 1201^2 + 3538^2 .

It is a cyclic number.

It is not a de Polignac number, because 13959845 - 2¹⁰ = 13958821 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13959796 and 13959805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1395980 + ... + 1395989.

It is an arithmetic number, because the mean of its divisors is an integer number (4187955).

Almost surely, 2^13959845 is an apocalyptic number.

It is an amenable number.

13959845 is a deficient number, since it is larger than the sum of its proper divisors (2791975).

13959845 is an equidigital number, since it uses as much as digits as its factorization.

13959845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2791974.

The product of its digits is 194400, while the sum is 44.

The square root of 13959845 is about 3736.2875959969. The cubic root of 13959845 is about 240.7835789456.

The spelling of 13959845 in words is "thirteen million, nine hundred fifty-nine thousand, eight hundred forty-five".