235609069 has 4 divisors (see below), whose sum is σ = 249468444. Its totient is φ = 221749696.

The previous prime is 235609067. The next prime is 235609091. The reversal of 235609069 is 960906532.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 110460100 + 125148969 = 10510^2 + 11187^2 .

It is a cyclic number.

It is not a de Polignac number, because 235609069 - 2¹ = 235609067 is a prime.

It is a super-2 number, since 2×235609069² = 111023266790093522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (235609061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6929662 + ... + 6929695.

It is an arithmetic number, because the mean of its divisors is an integer number (62367111).

Almost surely, 2^235609069 is an apocalyptic number.

It is an amenable number.

235609069 is a deficient number, since it is larger than the sum of its proper divisors (13859375).

235609069 is a wasteful number, since it uses less digits than its factorization.

235609069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13859374.

The product of its (nonzero) digits is 87480, while the sum is 40.

The square root of 235609069 is about 15349.5625019086. The cubic root of 235609069 is about 617.6332496129.

The spelling of 235609069 in words is "two hundred thirty-five million, six hundred nine thousand, sixty-nine".