38273009 has 4 divisors (see below), whose sum is σ = 38291700. Its totient is φ = 38254320.

The previous prime is 38272991. The next prime is 38273017. The reversal of 38273009 is 90037283.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90037283 = 7 ⋅12862469.

It can be written as a sum of positive squares in 2 ways, for example, as 14992384 + 23280625 = 3872^2 + 4825^2 .

It is a cyclic number.

It is not a de Polignac number, because 38273009 - 2¹² = 38268913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38273099) 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, 5834 + ... + 10515.

It is an arithmetic number, because the mean of its divisors is an integer number (9572925).

Almost surely, 2^38273009 is an apocalyptic number.

It is an amenable number.

38273009 is a deficient number, since it is larger than the sum of its proper divisors (18691).

38273009 is a wasteful number, since it uses less digits than its factorization.

38273009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18690.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 38273009 is about 6186.5183261670. The cubic root of 38273009 is about 337.0007513771. Note that the first 3 decimals are identical.

The spelling of 38273009 in words is "thirty-eight million, two hundred seventy-three thousand, nine".