900689983 has 2 divisors, whose sum is σ = 900689984. Its totient is φ = 900689982.

The previous prime is 900689963. The next prime is 900690013. The reversal of 900689983 is 389986009.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 900689983 - 2²¹ = 898592831 is a prime.

It is a super-2 number, since 2×900689983² = 1622484890953080578, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 900689983.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (900689953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450344991 + 450344992.

It is an arithmetic number, because the mean of its divisors is an integer number (450344992).

Almost surely, 2^900689983 is an apocalyptic number.

900689983 is a deficient number, since it is larger than the sum of its proper divisors (1).

900689983 is an equidigital number, since it uses as much as digits as its factorization.

900689983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 839808, while the sum is 52.

The square root of 900689983 is about 30011.4975134531. The cubic root of 900689983 is about 965.7360516778.

It can be divided in two parts, 9006 and 89983, that added together give a palindrome (98989).

The spelling of 900689983 in words is "nine hundred million, six hundred eighty-nine thousand, nine hundred eighty-three".