13903393 has 4 divisors (see below), whose sum is σ = 15889600. Its totient is φ = 11917188.

The previous prime is 13903391. The next prime is 13903397. The reversal of 13903393 is 39330931.

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 a cyclic number.

It is not a de Polignac number, because 13903393 - 2¹ = 13903391 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13903391) 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, 993093 + ... + 993106.

It is an arithmetic number, because the mean of its divisors is an integer number (3972400).

Almost surely, 2^13903393 is an apocalyptic number.

It is an amenable number.

13903393 is a deficient number, since it is larger than the sum of its proper divisors (1986207).

13903393 is an equidigital number, since it uses as much as digits as its factorization.

13903393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1986206.

The product of its (nonzero) digits is 6561, while the sum is 31.

The square root of 13903393 is about 3728.7253854367. The cubic root of 13903393 is about 240.4585734667.

The spelling of 13903393 in words is "thirteen million, nine hundred three thousand, three hundred ninety-three".