429940226 has 4 divisors (see below), whose sum is σ = 644910342. Its totient is φ = 214970112.

The previous prime is 429940213. The next prime is 429940237. The reversal of 429940226 is 622049924.

It is a Cunningham number, because it is equal to 20735²+1.

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

It can be written as a sum of positive squares in only one way, i.e., 429940225 + 1 = 20735^2 + 1^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 429940226.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107485055 + ... + 107485058.

Almost surely, 2^429940226 is an apocalyptic number.

429940226 is a deficient number, since it is larger than the sum of its proper divisors (214970116).

429940226 is a wasteful number, since it uses less digits than its factorization.

429940226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214970115.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 429940226 is about 20735.0000241138. Note that the first 4 decimals coincide. The cubic root of 429940226 is about 754.7492557983.

The spelling of 429940226 in words is "four hundred twenty-nine million, nine hundred forty thousand, two hundred twenty-six".