235607993 has 2 divisors, whose sum is σ = 235607994. Its totient is φ = 235607992.

The previous prime is 235607959. The next prime is 235608013. The reversal of 235607993 is 399706532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 227496889 + 8111104 = 15083^2 + 2848^2 .

It is a cyclic number.

It is not a de Polignac number, because 235607993 - 2¹² = 235603897 is a prime.

It is a super-2 number, since 2×235607993² = 111022252730976098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (235607893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117803996 + 117803997.

It is an arithmetic number, because the mean of its divisors is an integer number (117803997).

Almost surely, 2^235607993 is an apocalyptic number.

It is an amenable number.

235607993 is a deficient number, since it is larger than the sum of its proper divisors (1).

235607993 is an equidigital number, since it uses as much as digits as its factorization.

235607993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 306180, while the sum is 44.

The square root of 235607993 is about 15349.5274520097. The cubic root of 235607993 is about 617.6323093911.

The spelling of 235607993 in words is "two hundred thirty-five million, six hundred seven thousand, nine hundred ninety-three".