238878077 has 2 divisors, whose sum is σ = 238878078. Its totient is φ = 238878076.

The previous prime is 238878071. The next prime is 238878083. The reversal of 238878077 is 770878832.

It is a balanced prime because it is at equal distance from previous prime (238878071) and next prime (238878083).

It can be written as a sum of positive squares in only one way, i.e., 150160516 + 88717561 = 12254^2 + 9419^2 .

It is a cyclic number.

It is not a de Polignac number, because 238878077 - 2⁴ = 238878061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238878071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119439038 + 119439039.

It is an arithmetic number, because the mean of its divisors is an integer number (119439039).

Almost surely, 2^238878077 is an apocalyptic number.

It is an amenable number.

238878077 is a deficient number, since it is larger than the sum of its proper divisors (1).

238878077 is an equidigital number, since it uses as much as digits as its factorization.

238878077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1053696, while the sum is 50.

The square root of 238878077 is about 15455.6810590799. The cubic root of 238878077 is about 620.4766340071.

The spelling of 238878077 in words is "two hundred thirty-eight million, eight hundred seventy-eight thousand, seventy-seven".