238880809 has 4 divisors (see below), whose sum is σ = 239762560. Its totient is φ = 237999060.

The previous prime is 238880797. The next prime is 238880897. The reversal of 238880809 is 908088832.

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 238880809 - 2⁹ = 238880297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238880899) 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, 440469 + ... + 441010.

It is an arithmetic number, because the mean of its divisors is an integer number (59940640).

Almost surely, 2^238880809 is an apocalyptic number.

It is an amenable number.

238880809 is a deficient number, since it is larger than the sum of its proper divisors (881751).

238880809 is an equidigital number, since it uses as much as digits as its factorization.

238880809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881750.

The product of its (nonzero) digits is 221184, while the sum is 46.

The square root of 238880809 is about 15455.7694405681. The cubic root of 238880809 is about 620.4789994198.

The spelling of 238880809 in words is "two hundred thirty-eight million, eight hundred eighty thousand, eight hundred nine".