917902945 has 8 divisors (see below), whose sum is σ = 1101697344. Its totient is φ = 734179824.

The previous prime is 917902927. The next prime is 917902969. The reversal of 917902945 is 549209719.

It is a happy number.

917902945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 917902945 - 2¹¹ = 917900897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 917902895 and 917902904.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16542 + ... + 45928.

It is an arithmetic number, because the mean of its divisors is an integer number (137712168).

Almost surely, 2^917902945 is an apocalyptic number.

It is an amenable number.

917902945 is a deficient number, since it is larger than the sum of its proper divisors (183794399).

917902945 is a wasteful number, since it uses less digits than its factorization.

917902945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35639.

The product of its (nonzero) digits is 204120, while the sum is 46.

The square root of 917902945 is about 30296.9131265877. The cubic root of 917902945 is about 971.8492885745.

The spelling of 917902945 in words is "nine hundred seventeen million, nine hundred two thousand, nine hundred forty-five".