38372009 has 8 divisors (see below), whose sum is σ = 43754760. Its totient is φ = 33336576.

The previous prime is 38372003. The next prime is 38372011. The reversal of 38372009 is 90027383.

It can be written as a sum of positive squares in 4 ways, for example, as 8832784 + 29539225 = 2972^2 + 5435^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 38372009 - 2¹⁶ = 38306473 is a prime.

It is a super-2 number, since 2×38372009² = 2944822149392162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38372003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86594 + ... + 87035.

It is an arithmetic number, because the mean of its divisors is an integer number (5469345).

Almost surely, 2^38372009 is an apocalyptic number.

It is an amenable number.

38372009 is a deficient number, since it is larger than the sum of its proper divisors (5382751).

38372009 is a wasteful number, since it uses less digits than its factorization.

38372009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173659.

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

The square root of 38372009 is about 6194.5144281049. The cubic root of 38372009 is about 337.2910721540.

The spelling of 38372009 in words is "thirty-eight million, three hundred seventy-two thousand, nine".