900689444 has 24 divisors (see below), whose sum is σ = 1670687928. Its totient is φ = 423406080.

The previous prime is 900689443. The next prime is 900689459. The reversal of 900689444 is 444986009.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 42902500 + 857786944 = 6550^2 + 29288^2 .

It is a super-2 number, since 2×900689444² = 1622482949066058272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 900689395 and 900689404.

It is not an unprimeable number, because it can be changed into a prime (900689443) 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, 62942 + ... + 75914.

It is an arithmetic number, because the mean of its divisors is an integer number (69611997).

Almost surely, 2^900689444 is an apocalyptic number.

It is an amenable number.

900689444 is a deficient number, since it is larger than the sum of its proper divisors (769998484).

900689444 is a wasteful number, since it uses less digits than its factorization.

900689444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14015 (or 14013 counting only the distinct ones).

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

The square root of 900689444 is about 30011.4885335599. The cubic root of 900689444 is about 965.7358590360.

The spelling of 900689444 in words is "nine hundred million, six hundred eighty-nine thousand, four hundred forty-four".