235478389 has 2 divisors, whose sum is σ = 235478390. Its totient is φ = 235478388.

The previous prime is 235478377. The next prime is 235478429. The reversal of 235478389 is 983874532.

235478389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223263364 + 12215025 = 14942^2 + 3495^2 .

It is a cyclic number.

It is not a de Polignac number, because 235478389 - 2⁷ = 235478261 is a prime.

It is a super-3 number, since 3×235478389³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (235478359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117739194 + 117739195.

It is an arithmetic number, because the mean of its divisors is an integer number (117739195).

Almost surely, 2^235478389 is an apocalyptic number.

It is an amenable number.

235478389 is a deficient number, since it is larger than the sum of its proper divisors (1).

235478389 is an equidigital number, since it uses as much as digits as its factorization.

235478389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 49.

The square root of 235478389 is about 15345.3051126395. The cubic root of 235478389 is about 617.5190388990.

The spelling of 235478389 in words is "two hundred thirty-five million, four hundred seventy-eight thousand, three hundred eighty-nine".