338388421 has 8 divisors (see below), whose sum is σ = 397182080. Its totient is φ = 282207888.

The previous prime is 338388419. The next prime is 338388431. The reversal of 338388421 is 124883833.

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 338388421 - 2¹ = 338388419 is a prime.

It is a super-2 number, since 2×338388421² = 229013446933746482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (338388431) 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, 653001 + ... + 653518.

It is an arithmetic number, because the mean of its divisors is an integer number (49647760).

Almost surely, 2^338388421 is an apocalyptic number.

It is an amenable number.

338388421 is a deficient number, since it is larger than the sum of its proper divisors (58793659).

338388421 is a wasteful number, since it uses less digits than its factorization.

338388421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306563.

The product of its digits is 110592, while the sum is 40.

The square root of 338388421 is about 18395.3369362999. The cubic root of 338388421 is about 696.8487060695.

The spelling of 338388421 in words is "three hundred thirty-eight million, three hundred eighty-eight thousand, four hundred twenty-one".