3749021 has 2 divisors, whose sum is σ = 3749022. Its totient is φ = 3749020.

The previous prime is 3748991. The next prime is 3749029. The reversal of 3749021 is 1209473.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3667225 + 81796 = 1915^2 + 286^2 .

It is a cyclic number.

It is not a de Polignac number, because 3749021 - 2⁶ = 3748957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3749029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1874510 + 1874511.

It is an arithmetic number, because the mean of its divisors is an integer number (1874511).

Almost surely, 2^3749021 is an apocalyptic number.

It is an amenable number.

3749021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3749021 is an equidigital number, since it uses as much as digits as its factorization.

3749021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 3749021 is about 1936.2388798906. The cubic root of 3749021 is about 155.3481042071.

The spelling of 3749021 in words is "three million, seven hundred forty-nine thousand, twenty-one".