13872783 has 4 divisors (see below), whose sum is σ = 18497048. Its totient is φ = 9248520.

The previous prime is 13872773. The next prime is 13872787. The reversal of 13872783 is 38727831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38727831 = 3 ⋅12909277.

It is a de Polignac number, because none of the positive numbers 2^k-13872783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13872787) 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, 2312128 + ... + 2312133.

It is an arithmetic number, because the mean of its divisors is an integer number (4624262).

Almost surely, 2^13872783 is an apocalyptic number.

13872783 is a deficient number, since it is larger than the sum of its proper divisors (4624265).

13872783 is an equidigital number, since it uses as much as digits as its factorization.

13872783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4624264.

The product of its digits is 56448, while the sum is 39.

The square root of 13872783 is about 3724.6185039545. The cubic root of 13872783 is about 240.2819776007.

The spelling of 13872783 in words is "thirteen million, eight hundred seventy-two thousand, seven hundred eighty-three".