238990479 has 32 divisors (see below), whose sum is σ = 405726720. Its totient is φ = 121709952.

The previous prime is 238990463. The next prime is 238990483. The reversal of 238990479 is 974099832.

It is not a de Polignac number, because 238990479 - 2⁴ = 238990463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238990459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7177 + ... + 23010.

It is an arithmetic number, because the mean of its divisors is an integer number (12678960).

Almost surely, 2^238990479 is an apocalyptic number.

238990479 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

238990479 is a deficient number, since it is larger than the sum of its proper divisors (166736241).

238990479 is a wasteful number, since it uses less digits than its factorization.

238990479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30239.

The product of its (nonzero) digits is 979776, while the sum is 51.

The square root of 238990479 is about 15459.3168995270. The cubic root of 238990479 is about 620.5739387066.

The spelling of 238990479 in words is "two hundred thirty-eight million, nine hundred ninety thousand, four hundred seventy-nine".