405874229 has 2 divisors, whose sum is σ = 405874230. Its totient is φ = 405874228.

The previous prime is 405874199. The next prime is 405874247. The reversal of 405874229 is 922478504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 323100625 + 82773604 = 17975^2 + 9098^2 .

It is a cyclic number.

It is not a de Polignac number, because 405874229 - 2²⁰ = 404825653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405874529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202937114 + 202937115.

It is an arithmetic number, because the mean of its divisors is an integer number (202937115).

Almost surely, 2^405874229 is an apocalyptic number.

It is an amenable number.

405874229 is a deficient number, since it is larger than the sum of its proper divisors (1).

405874229 is an equidigital number, since it uses as much as digits as its factorization.

405874229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 405874229 is about 20146.3204829070. The cubic root of 405874229 is about 740.3955938157.

It can be divided in two parts, 4058 and 74229, that added together give a palindrome (78287).

The spelling of 405874229 in words is "four hundred five million, eight hundred seventy-four thousand, two hundred twenty-nine".