238904101 has 2 divisors, whose sum is σ = 238904102. Its totient is φ = 238904100.

The previous prime is 238904093. The next prime is 238904123. The reversal of 238904101 is 101409832.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 238702500 + 201601 = 15450^2 + 449^2 .

It is a cyclic number.

It is not a de Polignac number, because 238904101 - 2³ = 238904093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 238904101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238904191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119452050 + 119452051.

It is an arithmetic number, because the mean of its divisors is an integer number (119452051).

Almost surely, 2^238904101 is an apocalyptic number.

It is an amenable number.

238904101 is a deficient number, since it is larger than the sum of its proper divisors (1).

238904101 is an equidigital number, since it uses as much as digits as its factorization.

238904101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 238904101 is about 15456.5229272304. The cubic root of 238904101 is about 620.4991653025.

The spelling of 238904101 in words is "two hundred thirty-eight million, nine hundred four thousand, one hundred one".