238400693 has 2 divisors, whose sum is σ = 238400694. Its totient is φ = 238400692.

The previous prime is 238400663. The next prime is 238400719. The reversal of 238400693 is 396004832.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 236144689 + 2256004 = 15367^2 + 1502^2 .

It is a cyclic number.

It is not a de Polignac number, because 238400693 - 2⁶ = 238400629 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238400663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119200346 + 119200347.

It is an arithmetic number, because the mean of its divisors is an integer number (119200347).

Almost surely, 2^238400693 is an apocalyptic number.

It is an amenable number.

238400693 is a deficient number, since it is larger than the sum of its proper divisors (1).

238400693 is an equidigital number, since it uses as much as digits as its factorization.

238400693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 238400693 is about 15440.2296938873. The cubic root of 238400693 is about 620.0630294923.

The spelling of 238400693 in words is "two hundred thirty-eight million, four hundred thousand, six hundred ninety-three".