404292869 has 8 divisors (see below), whose sum is σ = 410248152. Its totient is φ = 398379520.

The previous prime is 404292853. The next prime is 404292871. The reversal of 404292869 is 968292404.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1809025 + 402483844 = 1345^2 + 20062^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 404292869 - 2⁴ = 404292853 is a prime.

It is a super-2 number, since 2×404292869² = 326905447848502322, 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 (404292809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9209 + ... + 29889.

It is an arithmetic number, because the mean of its divisors is an integer number (51281019).

Almost surely, 2^404292869 is an apocalyptic number.

It is an amenable number.

404292869 is a deficient number, since it is larger than the sum of its proper divisors (5955283).

404292869 is a wasteful number, since it uses less digits than its factorization.

404292869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20967.

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 404292869 is about 20107.0353110547. The cubic root of 404292869 is about 739.4327702084.

The spelling of 404292869 in words is "four hundred four million, two hundred ninety-two thousand, eight hundred sixty-nine".