235232989 has 2 divisors, whose sum is σ = 235232990. Its totient is φ = 235232988.

The previous prime is 235232969. The next prime is 235233023. The reversal of 235232989 is 989232532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 213452100 + 21780889 = 14610^2 + 4667^2 .

It is a cyclic number.

It is not a de Polignac number, because 235232989 - 2⁵ = 235232957 is a prime.

It is a super-2 number, since 2×235232989² = 110669118227748242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (235232909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117616494 + 117616495.

It is an arithmetic number, because the mean of its divisors is an integer number (117616495).

Almost surely, 2^235232989 is an apocalyptic number.

It is an amenable number.

235232989 is a deficient number, since it is larger than the sum of its proper divisors (1).

235232989 is an equidigital number, since it uses as much as digits as its factorization.

235232989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 43.

The square root of 235232989 is about 15337.3070974014. The cubic root of 235232989 is about 617.3044518412.

The spelling of 235232989 in words is "two hundred thirty-five million, two hundred thirty-two thousand, nine hundred eighty-nine".