238895761 has 4 divisors (see below), whose sum is σ = 257272372. Its totient is φ = 220519152.

The previous prime is 238895749. The next prime is 238895773. The reversal of 238895761 is 167598832.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (238895749) and next prime (238895773).

It can be written as a sum of positive squares in 2 ways, for example, as 55130625 + 183765136 = 7425^2 + 13556^2 .

It is a cyclic number.

It is not a de Polignac number, because 238895761 - 2⁵ = 238895729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238895711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9188286 + ... + 9188311.

It is an arithmetic number, because the mean of its divisors is an integer number (64318093).

Almost surely, 2^238895761 is an apocalyptic number.

It is an amenable number.

238895761 is a deficient number, since it is larger than the sum of its proper divisors (18376611).

238895761 is a wasteful number, since it uses less digits than its factorization.

238895761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18376610.

The product of its digits is 725760, while the sum is 49.

The square root of 238895761 is about 15456.2531358670. The cubic root of 238895761 is about 620.4919447996.

The spelling of 238895761 in words is "two hundred thirty-eight million, eight hundred ninety-five thousand, seven hundred sixty-one".