238249357 has 2 divisors, whose sum is σ = 238249358. Its totient is φ = 238249356.

The previous prime is 238249343. The next prime is 238249391. The reversal of 238249357 is 753942832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203604361 + 34644996 = 14269^2 + 5886^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238249357 is a prime.

It is a super-2 number, since 2×238249357² = 113525512221826898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238249337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119124678 + 119124679.

It is an arithmetic number, because the mean of its divisors is an integer number (119124679).

Almost surely, 2^238249357 is an apocalyptic number.

It is an amenable number.

238249357 is a deficient number, since it is larger than the sum of its proper divisors (1).

238249357 is an equidigital number, since it uses as much as digits as its factorization.

238249357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 43.

The square root of 238249357 is about 15435.3282116060. The cubic root of 238249357 is about 619.9317970415.

The spelling of 238249357 in words is "two hundred thirty-eight million, two hundred forty-nine thousand, three hundred fifty-seven".