917889452 has 12 divisors (see below), whose sum is σ = 1618955520. Its totient is φ = 455330736.

The previous prime is 917889433. The next prime is 917889493. The reversal of 917889452 is 254988719.

It is a junction number, because it is equal to n+sod(n) for n = 917889394 and 917889403.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 902927 + ... + 903942.

It is an arithmetic number, because the mean of its divisors is an integer number (134912960).

Almost surely, 2^917889452 is an apocalyptic number.

It is an amenable number.

917889452 is a deficient number, since it is larger than the sum of its proper divisors (701066068).

917889452 is a wasteful number, since it uses less digits than its factorization.

917889452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1807000 (or 1806998 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 53.

The square root of 917889452 is about 30296.6904463177. The cubic root of 917889452 is about 971.8445265508.

The spelling of 917889452 in words is "nine hundred seventeen million, eight hundred eighty-nine thousand, four hundred fifty-two".