404481745 has 4 divisors (see below), whose sum is σ = 485378100. Its totient is φ = 323585392.

The previous prime is 404481733. The next prime is 404481761. The reversal of 404481745 is 547184404.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 219276864 + 185204881 = 14808^2 + 13609^2 .

It is a cyclic number.

It is not a de Polignac number, because 404481745 - 2⁵ = 404481713 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40448170 + ... + 40448179.

It is an arithmetic number, because the mean of its divisors is an integer number (121344525).

Almost surely, 2^404481745 is an apocalyptic number.

It is an amenable number.

404481745 is a deficient number, since it is larger than the sum of its proper divisors (80896355).

404481745 is an equidigital number, since it uses as much as digits as its factorization.

404481745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80896354.

The product of its (nonzero) digits is 71680, while the sum is 37.

The square root of 404481745 is about 20111.7315266488. The cubic root of 404481745 is about 739.5479007416.

The spelling of 404481745 in words is "four hundred four million, four hundred eighty-one thousand, seven hundred forty-five".