238669966 has 4 divisors (see below), whose sum is σ = 358004952. Its totient is φ = 119334982.

The previous prime is 238669883. The next prime is 238669967. The reversal of 238669966 is 669966832.

It is a happy number.

238669966 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238669967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59667490 + ... + 59667493.

It is an arithmetic number, because the mean of its divisors is an integer number (89501238).

Almost surely, 2^238669966 is an apocalyptic number.

238669966 is a deficient number, since it is larger than the sum of its proper divisors (119334986).

238669966 is a wasteful number, since it uses less digits than its factorization.

238669966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119334985.

The product of its digits is 5038848, while the sum is 55.

The square root of 238669966 is about 15448.9470838630. The cubic root of 238669966 is about 620.2963948778.

The spelling of 238669966 in words is "two hundred thirty-eight million, six hundred sixty-nine thousand, nine hundred sixty-six".