38913321 has 8 divisors (see below), whose sum is σ = 52988544. Its totient is φ = 25390160.

The previous prime is 38913319. The next prime is 38913337. The reversal of 38913321 is 12331983.

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 38913321 - 2¹ = 38913319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38913821) 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, 137850 + ... + 138131.

It is an arithmetic number, because the mean of its divisors is an integer number (6623568).

Almost surely, 2^38913321 is an apocalyptic number.

It is an amenable number.

38913321 is a deficient number, since it is larger than the sum of its proper divisors (14075223).

38913321 is a wasteful number, since it uses less digits than its factorization.

38913321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276031.

The product of its digits is 3888, while the sum is 30.

The square root of 38913321 is about 6238.0542639512. The cubic root of 38913321 is about 338.8697213481.

The spelling of 38913321 in words is "thirty-eight million, nine hundred thirteen thousand, three hundred twenty-one".