3745209 has 24 divisors (see below), whose sum is σ = 5533920. Its totient is φ = 2251392.

The previous prime is 3745201. The next prime is 3745211. The reversal of 3745209 is 9025473.

It is not a de Polignac number, because 3745209 - 2³ = 3745201 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3745201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42037 + ... + 42125.

It is an arithmetic number, because the mean of its divisors is an integer number (230580).

Almost surely, 2^3745209 is an apocalyptic number.

3745209 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

3745209 is a deficient number, since it is larger than the sum of its proper divisors (1788711).

3745209 is a wasteful number, since it uses less digits than its factorization.

3745209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 3745209 is about 1935.2542468627. The cubic root of 3745209 is about 155.2954337634.

The spelling of 3745209 in words is "three million, seven hundred forty-five thousand, two hundred nine".