238998433 has 2 divisors, whose sum is σ = 238998434. Its totient is φ = 238998432.

The previous prime is 238998413. The next prime is 238998457. The reversal of 238998433 is 334899832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 225690529 + 13307904 = 15023^2 + 3648^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238998433 is a prime.

It is not a weakly prime, because it can be changed into another prime (238998413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119499216 + 119499217.

It is an arithmetic number, because the mean of its divisors is an integer number (119499217).

Almost surely, 2^238998433 is an apocalyptic number.

It is an amenable number.

238998433 is a deficient number, since it is larger than the sum of its proper divisors (1).

238998433 is an equidigital number, since it uses as much as digits as its factorization.

238998433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1119744, while the sum is 49.

The square root of 238998433 is about 15459.5741532553. The cubic root of 238998433 is about 620.5808232073.

The spelling of 238998433 in words is "two hundred thirty-eight million, nine hundred ninety-eight thousand, four hundred thirty-three".