404234261 has 2 divisors, whose sum is σ = 404234262. Its totient is φ = 404234260.

The previous prime is 404234221. The next prime is 404234317. The reversal of 404234261 is 162432404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 306600100 + 97634161 = 17510^2 + 9881^2 .

It is a cyclic number.

It is not a de Polignac number, because 404234261 - 2⁶ = 404234197 is a prime.

It is a super-2 number, since 2×404234261² = 326810675532432242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 404234261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404234221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202117130 + 202117131.

It is an arithmetic number, because the mean of its divisors is an integer number (202117131).

Almost surely, 2^404234261 is an apocalyptic number.

It is an amenable number.

404234261 is a deficient number, since it is larger than the sum of its proper divisors (1).

404234261 is an equidigital number, since it uses as much as digits as its factorization.

404234261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 404234261 is about 20105.5778578980. The cubic root of 404234261 is about 739.3970380503.

Adding to 404234261 its reverse (162432404), we get a palindrome (566666665).

The spelling of 404234261 in words is "four hundred four million, two hundred thirty-four thousand, two hundred sixty-one".