238964081 has 4 divisors (see below), whose sum is σ = 241330164. Its totient is φ = 236598000.

The previous prime is 238964069. The next prime is 238964107. The reversal of 238964081 is 180469832.

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

It can be written as a sum of positive squares in 2 ways, for example, as 221533456 + 17430625 = 14884^2 + 4175^2 .

It is a cyclic number.

It is not a de Polignac number, because 238964081 - 2¹⁴ = 238947697 is a prime.

It is a super-2 number, since 2×238964081² = 114207664016349122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238964051) 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, 1182890 + ... + 1183091.

It is an arithmetic number, because the mean of its divisors is an integer number (60332541).

Almost surely, 2^238964081 is an apocalyptic number.

It is an amenable number.

238964081 is a deficient number, since it is larger than the sum of its proper divisors (2366083).

238964081 is a wasteful number, since it uses less digits than its factorization.

238964081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2366082.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 238964081 is about 15458.4630866073. The cubic root of 238964081 is about 620.5510891017.

The spelling of 238964081 in words is "two hundred thirty-eight million, nine hundred sixty-four thousand, eighty-one".