3863729 has 4 divisors (see below), whose sum is σ = 3945984. Its totient is φ = 3781476.

The previous prime is 3863687. The next prime is 3863737. The reversal of 3863729 is 9273683.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9273683 = 277 ⋅33479.

It is a cyclic number.

It is not a de Polignac number, because 3863729 - 2⁸ = 3863473 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3863692 and 3863701.

It is not an unprimeable number, because it can be changed into a prime (3863759) 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, 41057 + ... + 41150.

It is an arithmetic number, because the mean of its divisors is an integer number (986496).

Almost surely, 2^3863729 is an apocalyptic number.

It is an amenable number.

3863729 is a deficient number, since it is larger than the sum of its proper divisors (82255).

3863729 is an equidigital number, since it uses as much as digits as its factorization.

3863729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82254.

The product of its digits is 54432, while the sum is 38.

The square root of 3863729 is about 1965.6370468629. The cubic root of 3863729 is about 156.9165987046.

The spelling of 3863729 in words is "three million, eight hundred sixty-three thousand, seven hundred twenty-nine".