238689966 has 16 divisors (see below), whose sum is σ = 480816000. Its totient is φ = 78990648.

The previous prime is 238689961. The next prime is 238689973. The reversal of 238689966 is 669986832.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238689961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142266 + ... + 143933.

It is an arithmetic number, because the mean of its divisors is an integer number (30051000).

Almost surely, 2^238689966 is an apocalyptic number.

238689966 is an abundant number, since it is smaller than the sum of its proper divisors (242126034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

238689966 is a wasteful number, since it uses less digits than its factorization.

238689966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286343.

The product of its digits is 6718464, while the sum is 57.

The square root of 238689966 is about 15449.5943636071. The cubic root of 238689966 is about 620.3137208693.

The spelling of 238689966 in words is "two hundred thirty-eight million, six hundred eighty-nine thousand, nine hundred sixty-six".