3729881 has 4 divisors (see below), whose sum is σ = 3735012. Its totient is φ = 3724752.

The previous prime is 3729877. The next prime is 3729883. The reversal of 3729881 is 1889273.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1713481 + 2016400 = 1309^2 + 1420^2 .

It is a cyclic number.

It is not a de Polignac number, because 3729881 - 2² = 3729877 is a prime.

It is a super-2 number, since 2×3729881² = 27824024548322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3729883) 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, 1250 + ... + 3003.

It is an arithmetic number, because the mean of its divisors is an integer number (933753).

Almost surely, 2^3729881 is an apocalyptic number.

It is an amenable number.

3729881 is a deficient number, since it is larger than the sum of its proper divisors (5131).

3729881 is an equidigital number, since it uses as much as digits as its factorization.

3729881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5130.

The product of its digits is 24192, while the sum is 38.

The square root of 3729881 is about 1931.2899834049. The cubic root of 3729881 is about 155.0832851057.

The spelling of 3729881 in words is "three million, seven hundred twenty-nine thousand, eight hundred eighty-one".