38093809 has 16 divisors (see below), whose sum is σ = 42032592. Its totient is φ = 34311168.

The previous prime is 38093789. The next prime is 38093833. The reversal of 38093809 is 90839083.

It can be written as a sum of positive squares in 8 ways, for example, as 944784 + 37149025 = 972^2 + 6095^2 .

It is not a de Polignac number, because 38093809 - 2¹⁷ = 37962737 is a prime.

It is a super-2 number, since 2×38093809² = 2902276568256962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38093899) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129867 + ... + 130159.

It is an arithmetic number, because the mean of its divisors is an integer number (2627037).

Almost surely, 2^38093809 is an apocalyptic number.

It is an amenable number.

38093809 is a deficient number, since it is larger than the sum of its proper divisors (3938783).

38093809 is a wasteful number, since it uses less digits than its factorization.

38093809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 38093809 is about 6172.0182274520. The cubic root of 38093809 is about 336.4739655760.

The spelling of 38093809 in words is "thirty-eight million, ninety-three thousand, eight hundred nine".