38957665 has 8 divisors (see below), whose sum is σ = 47341440. Its totient is φ = 30771312.

The previous prime is 38957663. The next prime is 38957671. The reversal of 38957665 is 56675983.

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 38957665 - 2¹ = 38957663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38957663) 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, 48919 + ... + 49708.

It is an arithmetic number, because the mean of its divisors is an integer number (5917680).

Almost surely, 2^38957665 is an apocalyptic number.

It is an amenable number.

38957665 is a deficient number, since it is larger than the sum of its proper divisors (8383775).

38957665 is an equidigital number, since it uses as much as digits as its factorization.

38957665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98711.

The product of its digits is 1360800, while the sum is 49.

The square root of 38957665 is about 6241.6075653633. The cubic root of 38957665 is about 338.9983930914.

The spelling of 38957665 in words is "thirty-eight million, nine hundred fifty-seven thousand, six hundred sixty-five".