3742209 has 6 divisors (see below), whose sum is σ = 5405426. Its totient is φ = 2494800.

The previous prime is 3742201. The next prime is 3742223. The reversal of 3742209 is 9022473.

It can be written as a sum of positive squares in only one way, i.e., 2039184 + 1703025 = 1428^2 + 1305^2 .

It is not a de Polignac number, because 3742209 - 2³ = 3742201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3742201) 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, 207892 + ... + 207909.

Almost surely, 2^3742209 is an apocalyptic number.

It is an amenable number.

3742209 is a deficient number, since it is larger than the sum of its proper divisors (1663217).

3742209 is a wasteful number, since it uses less digits than its factorization.

3742209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415807 (or 415804 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 3742209 is about 1934.4789996275. The cubic root of 3742209 is about 155.2539575955.

The spelling of 3742209 in words is "three million, seven hundred forty-two thousand, two hundred nine".