3752209 has 4 divisors (see below), whose sum is σ = 3873280. Its totient is φ = 3631140.

The previous prime is 3752191. The next prime is 3752219. The reversal of 3752209 is 9022573.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9022573 = 7 ⋅1288939.

It is a cyclic number.

It is not a de Polignac number, because 3752209 - 2⁷ = 3752081 is a prime.

It is a Duffinian number.

3752209 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3752219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60489 + ... + 60550.

It is an arithmetic number, because the mean of its divisors is an integer number (968320).

Almost surely, 2^3752209 is an apocalyptic number.

It is an amenable number.

3752209 is a deficient number, since it is larger than the sum of its proper divisors (121071).

3752209 is a wasteful number, since it uses less digits than its factorization.

3752209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121070.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 3752209 is about 1937.0619504807. The cubic root of 3752209 is about 155.3921254279.

The spelling of 3752209 in words is "three million, seven hundred fifty-two thousand, two hundred nine".