238997849 has 16 divisors (see below), whose sum is σ = 258681600. Its totient is φ = 219980544.

The previous prime is 238997821. The next prime is 238997887. The reversal of 238997849 is 948799832.

It is not a de Polignac number, because 238997849 - 2⁸ = 238997593 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (238997249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 239219 + ... + 240215.

It is an arithmetic number, because the mean of its divisors is an integer number (16167600).

Almost surely, 2^238997849 is an apocalyptic number.

It is an amenable number.

238997849 is a deficient number, since it is larger than the sum of its proper divisors (19683751).

238997849 is a wasteful number, since it uses less digits than its factorization.

238997849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1312.

The product of its digits is 7838208, while the sum is 59.

The square root of 238997849 is about 15459.5552652720. Note that the first 3 decimals coincide. The cubic root of 238997849 is about 620.5803177375.

The spelling of 238997849 in words is "two hundred thirty-eight million, nine hundred ninety-seven thousand, eight hundred forty-nine".