3750409 has 4 divisors (see below), whose sum is σ = 4038916. Its totient is φ = 3461904.

The previous prime is 3750407. The next prime is 3750419. The reversal of 3750409 is 9040573.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 944784 + 2805625 = 972^2 + 1675^2 .

It is a cyclic number.

It is not a de Polignac number, because 3750409 - 2¹ = 3750407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3750407) 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, 144234 + ... + 144259.

It is an arithmetic number, because the mean of its divisors is an integer number (1009729).

Almost surely, 2^3750409 is an apocalyptic number.

It is an amenable number.

3750409 is a deficient number, since it is larger than the sum of its proper divisors (288507).

3750409 is a wasteful number, since it uses less digits than its factorization.

3750409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288506.

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

The square root of 3750409 is about 1936.5972735703. The cubic root of 3750409 is about 155.3672733506.

The spelling of 3750409 in words is "three million, seven hundred fifty thousand, four hundred nine".