38197409 has 8 divisors (see below), whose sum is σ = 38750208. Its totient is φ = 37648800.

The previous prime is 38197403. The next prime is 38197421. The reversal of 38197409 is 90479183.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 38197409 - 2¹² = 38193313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38197403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20309 + ... + 22109.

It is an arithmetic number, because the mean of its divisors is an integer number (4843776).

Almost surely, 2^38197409 is an apocalyptic number.

It is an amenable number.

38197409 is a deficient number, since it is larger than the sum of its proper divisors (552799).

38197409 is a wasteful number, since it uses less digits than its factorization.

38197409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2095.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 38197409 is about 6180.4052456129. The cubic root of 38197409 is about 336.7787145699.

The spelling of 38197409 in words is "thirty-eight million, one hundred ninety-seven thousand, four hundred nine".