3727989 has 6 divisors (see below), whose sum is σ = 5384886. Its totient is φ = 2485320.

The previous prime is 3727961. The next prime is 3727991. The reversal of 3727989 is 9897273.

It can be written as a sum of positive squares in only one way, i.e., 2387025 + 1340964 = 1545^2 + 1158^2 .

It is not a de Polignac number, because 3727989 - 2¹² = 3723893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3727939) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 207102 + ... + 207119.

It is an arithmetic number, because the mean of its divisors is an integer number (897481).

Almost surely, 2^3727989 is an apocalyptic number.

It is an amenable number.

3727989 is a deficient number, since it is larger than the sum of its proper divisors (1656897).

3727989 is a wasteful number, since it uses less digits than its factorization.

3727989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414227 (or 414224 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 3727989 is about 1930.8000932256. The cubic root of 3727989 is about 155.0570584243.

The spelling of 3727989 in words is "three million, seven hundred twenty-seven thousand, nine hundred eighty-nine".