404040429 has 12 divisors (see below), whose sum is σ = 628507516. Its totient is φ = 248640192.

The previous prime is 404040419. The next prime is 404040433. The reversal of 404040429 is 924040404.

It can be written as a sum of positive squares in 2 ways, for example, as 132779529 + 271260900 = 11523^2 + 16470^2 .

It is not a de Polignac number, because 404040429 - 2¹² = 404036333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404040409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1726552 + ... + 1726785.

Almost surely, 2^404040429 is an apocalyptic number.

It is an amenable number.

404040429 is a deficient number, since it is larger than the sum of its proper divisors (224467087).

404040429 is a wasteful number, since it uses less digits than its factorization.

404040429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3453356 (or 3453353 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 404040429 is about 20100.7569260463. The cubic root of 404040429 is about 739.2788378432.

The spelling of 404040429 in words is "four hundred four million, forty thousand, four hundred twenty-nine".