3831729 has 8 divisors (see below), whose sum is σ = 5573472. Its totient is φ = 2322240.

The previous prime is 3831727. The next prime is 3831733. The reversal of 3831729 is 9271383.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3831729 - 2¹ = 3831727 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 116113 = 3831729 / (3 + 8 + 3 + 1 + 7 + 2 + 9).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3831729.

It is not an unprimeable number, because it can be changed into a prime (3831721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58024 + ... + 58089.

It is an arithmetic number, because the mean of its divisors is an integer number (696684).

Almost surely, 2^3831729 is an apocalyptic number.

It is an amenable number.

3831729 is a deficient number, since it is larger than the sum of its proper divisors (1741743).

3831729 is a wasteful number, since it uses less digits than its factorization.

3831729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116127.

The product of its digits is 9072, while the sum is 33.

The square root of 3831729 is about 1957.4802680998. The cubic root of 3831729 is about 156.4821947237.

It can be divided in two parts, 3831 and 729, that added together give a triangular number (4560 = T₉₅).

The spelling of 3831729 in words is "three million, eight hundred thirty-one thousand, seven hundred twenty-nine".