238998455 has 8 divisors (see below), whose sum is σ = 286902000. Its totient is φ = 191129536.

The previous prime is 238998433. The next prime is 238998457. The reversal of 238998455 is 554899832.

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 238998455 - 2⁶ = 238998391 is a prime.

It is a super-2 number, since 2×238998455² = 114240522984774050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 238998397 and 238998406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238998457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10316 + ... + 24174.

It is an arithmetic number, because the mean of its divisors is an integer number (35862750).

Almost surely, 2^238998455 is an apocalyptic number.

238998455 is a deficient number, since it is larger than the sum of its proper divisors (47903545).

238998455 is a wasteful number, since it uses less digits than its factorization.

238998455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17313.

The product of its digits is 3110400, while the sum is 53.

The square root of 238998455 is about 15459.5748647885. The cubic root of 238998455 is about 620.5808422489.

The spelling of 238998455 in words is "two hundred thirty-eight million, nine hundred ninety-eight thousand, four hundred fifty-five".