404542069 has 8 divisors (see below), whose sum is σ = 409160160. Its totient is φ = 399939696.

The previous prime is 404542063. The next prime is 404542097. The reversal of 404542069 is 960245404.

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 404542069 - 2¹¹ = 404540021 is a prime.

It is a super-2 number, since 2×404542069² = 327308571181601522, 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 (404542063) 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, 52347 + ... + 59575.

It is an arithmetic number, because the mean of its divisors is an integer number (51145020).

Almost surely, 2^404542069 is an apocalyptic number.

It is an amenable number.

404542069 is a deficient number, since it is larger than the sum of its proper divisors (4618091).

404542069 is a wasteful number, since it uses less digits than its factorization.

404542069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7859.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 404542069 is about 20113.2311924265. The cubic root of 404542069 is about 739.5846640570.

The spelling of 404542069 in words is "four hundred four million, five hundred forty-two thousand, sixty-nine".