404460109 has 8 divisors (see below), whose sum is σ = 410133240. Its totient is φ = 398823936.

The previous prime is 404460101. The next prime is 404460113. The reversal of 404460109 is 901064404.

It can be written as a sum of positive squares in 4 ways, for example, as 14516100 + 389944009 = 3810^2 + 19747^2 .

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 404460109 - 2³ = 404460101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404460101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13177 + ... + 31345.

It is an arithmetic number, because the mean of its divisors is an integer number (51266655).

Almost surely, 2^404460109 is an apocalyptic number.

It is an amenable number.

404460109 is a deficient number, since it is larger than the sum of its proper divisors (5673131).

404460109 is a wasteful number, since it uses less digits than its factorization.

404460109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18479.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 404460109 is about 20111.1936244471. The cubic root of 404460109 is about 739.5347142020.

The spelling of 404460109 in words is "four hundred four million, four hundred sixty thousand, one hundred nine".