3739021 has 12 divisors (see below), whose sum is σ = 4427836. Its totient is φ = 3136320.

The previous prime is 3739019. The next prime is 3739039. The reversal of 3739021 is 1209373.

3739021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 980100 + 2758921 = 990^2 + 1661^2 .

It is not a de Polignac number, because 3739021 - 2¹ = 3739019 is a prime.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3739051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 385 + ... + 2761.

Almost surely, 2^3739021 is an apocalyptic number.

It is an amenable number.

3739021 is a deficient number, since it is larger than the sum of its proper divisors (688815).

3739021 is a wasteful number, since it uses less digits than its factorization.

3739021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2412 (or 2401 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 3739021 is about 1933.6548295908. The cubic root of 3739021 is about 155.2098579534.

The spelling of 3739021 in words is "three million, seven hundred thirty-nine thousand, twenty-one".