3896729 has 16 divisors (see below), whose sum is σ = 4414080. Its totient is φ = 3421440.

The previous prime is 3896707. The next prime is 3896743. The reversal of 3896729 is 9276983.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3896729 is a prime.

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

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 3896729.

It is not an unprimeable number, because it can be changed into a prime (3896029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16049 + ... + 16289.

It is an arithmetic number, because the mean of its divisors is an integer number (275880).

Almost surely, 2^3896729 is an apocalyptic number.

It is an amenable number.

3896729 is a deficient number, since it is larger than the sum of its proper divisors (517351).

3896729 is a wasteful number, since it uses less digits than its factorization.

3896729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320.

The product of its digits is 163296, while the sum is 44.

The square root of 3896729 is about 1974.0134244731. The cubic root of 3896729 is about 157.3620729163.

The spelling of 3896729 in words is "three million, eight hundred ninety-six thousand, seven hundred twenty-nine".