904445380 has 24 divisors (see below), whose sum is σ = 1905340248. Its totient is φ = 360634368.

The previous prime is 904445351. The next prime is 904445383. The reversal of 904445380 is 83544409.

It can be written as a sum of positive squares in 4 ways, for example, as 68425984 + 836019396 = 8272^2 + 28914^2 .

It is not an unprimeable number, because it can be changed into a prime (904445383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64989 + ... + 77668.

It is an arithmetic number, because the mean of its divisors is an integer number (79389177).

Almost surely, 2^904445380 is an apocalyptic number.

It is an amenable number.

904445380 is an abundant number, since it is smaller than the sum of its proper divisors (1000894868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

904445380 is a wasteful number, since it uses less digits than its factorization.

904445380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142983 (or 142981 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 904445380 is about 30073.9984039369. The cubic root of 904445380 is about 967.0763920404.

Adding to 904445380 its reverse (83544409), we get a palindrome (987989789).

The spelling of 904445380 in words is "nine hundred four million, four hundred forty-five thousand, three hundred eighty".