3728999 has 4 divisors (see below), whose sum is σ = 3763320. Its totient is φ = 3694680.

The previous prime is 3728987. The next prime is 3729007. The reversal of 3728999 is 9998273.

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

It is a cyclic number.

It is not a de Polignac number, because 3728999 - 2⁴ = 3728983 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3728939) 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, 16997 + ... + 17214.

It is an arithmetic number, because the mean of its divisors is an integer number (940830).

Almost surely, 2^3728999 is an apocalyptic number.

3728999 is a deficient number, since it is larger than the sum of its proper divisors (34321).

3728999 is a wasteful number, since it uses less digits than its factorization.

3728999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34320.

The product of its digits is 244944, while the sum is 47.

The square root of 3728999 is about 1931.0616251171. The cubic root of 3728999 is about 155.0710600293.

The spelling of 3728999 in words is "three million, seven hundred twenty-eight thousand, nine hundred ninety-nine".