238923279 has 24 divisors (see below), whose sum is σ = 395313152. Its totient is φ = 136216080.

The previous prime is 238923263. The next prime is 238923283. The reversal of 238923279 is 972329832.

238923279 is a `hidden beast` number, since 238 + 92 + 327 + 9 = 666.

It is not a de Polignac number, because 238923279 - 2⁴ = 238923263 is a prime.

It is a super-2 number, since 2×238923279² = 114168666496223682, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238923679) 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 23 ways as a sum of consecutive naturals, for example, 25074 + ... + 33264.

Almost surely, 2^238923279 is an apocalyptic number.

238923279 is a deficient number, since it is larger than the sum of its proper divisors (156389873).

238923279 is a wasteful number, since it uses less digits than its factorization.

238923279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8667 (or 8664 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 238923279 is about 15457.1433001056. The cubic root of 238923279 is about 620.5157683586.

The spelling of 238923279 in words is "two hundred thirty-eight million, nine hundred twenty-three thousand, two hundred seventy-nine".