238980421 has 4 divisors (see below), whose sum is σ = 239551200. Its totient is φ = 238409644.

The previous prime is 238980409. The next prime is 238980433. The reversal of 238980421 is 124089832.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (238980409) and next prime (238980433).

It is a cyclic number.

It is not a de Polignac number, because 238980421 - 2⁵ = 238980389 is a prime.

It is a super-2 number, since 2×238980421² = 114223283242674482, 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 (238980481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284761 + ... + 285598.

It is an arithmetic number, because the mean of its divisors is an integer number (59887800).

Almost surely, 2^238980421 is an apocalyptic number.

It is an amenable number.

238980421 is a deficient number, since it is larger than the sum of its proper divisors (570779).

238980421 is an equidigital number, since it uses as much as digits as its factorization.

238980421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570778.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 238980421 is about 15458.9915906569. The cubic root of 238980421 is about 620.5652328922.

The spelling of 238980421 in words is "two hundred thirty-eight million, nine hundred eighty thousand, four hundred twenty-one".