238744147 has 2 divisors, whose sum is σ = 238744148. Its totient is φ = 238744146.

The previous prime is 238744111. The next prime is 238744151. The reversal of 238744147 is 741447832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 238744147 - 2⁷ = 238744019 is a prime.

It is not a weakly prime, because it can be changed into another prime (238744157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119372073 + 119372074.

It is an arithmetic number, because the mean of its divisors is an integer number (119372074).

Almost surely, 2^238744147 is an apocalyptic number.

238744147 is a deficient number, since it is larger than the sum of its proper divisors (1).

238744147 is an equidigital number, since it uses as much as digits as its factorization.

238744147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 150528, while the sum is 40.

The square root of 238744147 is about 15451.3477405694. The cubic root of 238744147 is about 620.3606529846.

The spelling of 238744147 in words is "two hundred thirty-eight million, seven hundred forty-four thousand, one hundred forty-seven".