38798421 has 8 divisors (see below), whose sum is σ = 51760800. Its totient is φ = 25850832.

The previous prime is 38798407. The next prime is 38798449. The reversal of 38798421 is 12489783.

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

It is not a de Polignac number, because 38798421 - 2⁹ = 38797909 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38798321) 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, 6255 + ... + 10803.

It is an arithmetic number, because the mean of its divisors is an integer number (6470100).

Almost surely, 2^38798421 is an apocalyptic number.

It is an amenable number.

38798421 is a deficient number, since it is larger than the sum of its proper divisors (12962379).

38798421 is a wasteful number, since it uses less digits than its factorization.

38798421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7395.

The product of its digits is 96768, while the sum is 42.

The square root of 38798421 is about 6228.8378530830. The cubic root of 38798421 is about 338.5358638120.

The spelling of 38798421 in words is "thirty-eight million, seven hundred ninety-eight thousand, four hundred twenty-one".