38407009 has 2 divisors, whose sum is σ = 38407010. Its totient is φ = 38407008.

The previous prime is 38407007. The next prime is 38407027. The reversal of 38407009 is 90070483.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37859409 + 547600 = 6153^2 + 740^2 .

It is a cyclic number.

It is not a de Polignac number, because 38407009 - 2¹ = 38407007 is a prime.

Together with 38407007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (38407007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19203504 + 19203505.

It is an arithmetic number, because the mean of its divisors is an integer number (19203505).

Almost surely, 2^38407009 is an apocalyptic number.

It is an amenable number.

38407009 is a deficient number, since it is larger than the sum of its proper divisors (1).

38407009 is an equidigital number, since it uses as much as digits as its factorization.

38407009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 38407009 is about 6197.3388643836. The cubic root of 38407009 is about 337.3935913287.

The spelling of 38407009 in words is "thirty-eight million, four hundred seven thousand, nine".