238800817 has 4 divisors (see below), whose sum is σ = 240623856. Its totient is φ = 236977780.

The previous prime is 238800803. The next prime is 238800827. The reversal of 238800817 is 718008832.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 238800817 - 2⁷ = 238800689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238800827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 911323 + ... + 911584.

It is an arithmetic number, because the mean of its divisors is an integer number (60155964).

Almost surely, 2^238800817 is an apocalyptic number.

It is an amenable number.

238800817 is a deficient number, since it is larger than the sum of its proper divisors (1823039).

238800817 is a wasteful number, since it uses less digits than its factorization.

238800817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1823038.

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 238800817 is about 15453.1814523741. The cubic root of 238800817 is about 620.4097334994.

The spelling of 238800817 in words is "two hundred thirty-eight million, eight hundred thousand, eight hundred seventeen".