238998423 has 16 divisors (see below), whose sum is σ = 324302336. Its totient is φ = 156530880.

The previous prime is 238998413. The next prime is 238998433. The reversal of 238998423 is 324899832.

It is an interprime number because it is at equal distance from previous prime (238998413) and next prime (238998433).

It is not a de Polignac number, because 238998423 - 2⁵ = 238998391 is a prime.

It is a super-3 number, since 3×238998423³ (a number of 26 digits) contains 333 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 (238998413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57336 + ... + 61362.

It is an arithmetic number, because the mean of its divisors is an integer number (20268896).

Almost surely, 2^238998423 is an apocalyptic number.

238998423 is a deficient number, since it is larger than the sum of its proper divisors (85303913).

238998423 is a wasteful number, since it uses less digits than its factorization.

238998423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4374.

The product of its digits is 746496, while the sum is 48.

The square root of 238998423 is about 15459.5738298311. The cubic root of 238998423 is about 620.5808145520.

The spelling of 238998423 in words is "two hundred thirty-eight million, nine hundred ninety-eight thousand, four hundred twenty-three".