3878723 has 4 divisors (see below), whose sum is σ = 3973368. Its totient is φ = 3784080.

The previous prime is 3878713. The next prime is 3878741. The reversal of 3878723 is 3278783.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3878723 is a prime.

It is a super-2 number, since 2×3878723² = 30088984221458, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3878713) 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, 47261 + ... + 47342.

It is an arithmetic number, because the mean of its divisors is an integer number (993342).

Almost surely, 2^3878723 is an apocalyptic number.

3878723 is a deficient number, since it is larger than the sum of its proper divisors (94645).

3878723 is an equidigital number, since it uses as much as digits as its factorization.

3878723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94644.

The product of its digits is 56448, while the sum is 38.

The square root of 3878723 is about 1969.4473844203. The cubic root of 3878723 is about 157.1193191427.

The spelling of 3878723 in words is "three million, eight hundred seventy-eight thousand, seven hundred twenty-three".