38752409 has 4 divisors (see below), whose sum is σ = 38896740. Its totient is φ = 38608080.

The previous prime is 38752391. The next prime is 38752433. The reversal of 38752409 is 90425783.

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 3385600 + 35366809 = 1840^2 + 5947^2 .

It is a cyclic number.

It is not a de Polignac number, because 38752409 - 2²⁰ = 37703833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38752459) 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, 71762 + ... + 72299.

It is an arithmetic number, because the mean of its divisors is an integer number (9724185).

Almost surely, 2^38752409 is an apocalyptic number.

It is an amenable number.

38752409 is a deficient number, since it is larger than the sum of its proper divisors (144331).

38752409 is a wasteful number, since it uses less digits than its factorization.

38752409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144330.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 38752409 is about 6225.1432915235. The cubic root of 38752409 is about 338.4019848771.

The spelling of 38752409 in words is "thirty-eight million, seven hundred fifty-two thousand, four hundred nine".