13909953 has 4 divisors (see below), whose sum is σ = 18546608. Its totient is φ = 9273300.

The previous prime is 13909949. The next prime is 13909981. The reversal of 13909953 is 35990931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13909953 - 2² = 13909949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13909913) 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 3 ways as a sum of consecutive naturals, for example, 2318323 + ... + 2318328.

It is an arithmetic number, because the mean of its divisors is an integer number (4636652).

Almost surely, 2^13909953 is an apocalyptic number.

It is an amenable number.

13909953 is a deficient number, since it is larger than the sum of its proper divisors (4636655).

13909953 is an equidigital number, since it uses as much as digits as its factorization.

13909953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4636654.

The product of its (nonzero) digits is 32805, while the sum is 39.

The square root of 13909953 is about 3729.6049388642. The cubic root of 13909953 is about 240.4963858246.

The spelling of 13909953 in words is "thirteen million, nine hundred nine thousand, nine hundred fifty-three".