917285049 has 12 divisors (see below), whose sum is σ = 1325876500. Its totient is φ = 611103744.

The previous prime is 917285029. The next prime is 917285063. The reversal of 917285049 is 940582719.

It can be written as a sum of positive squares in 2 ways, for example, as 118657449 + 798627600 = 10893^2 + 28260^2 .

It is not a de Polignac number, because 917285049 - 2¹¹ = 917283001 is a prime.

It is a super-2 number, since 2×917285049² = 1682823722237864802, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 917284995 and 917285013.

It is not an unprimeable number, because it can be changed into a prime (917285029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20824 + ... + 47625.

Almost surely, 2^917285049 is an apocalyptic number.

It is an amenable number.

917285049 is a deficient number, since it is larger than the sum of its proper divisors (408591451).

917285049 is a wasteful number, since it uses less digits than its factorization.

917285049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69944 (or 69941 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 917285049 is about 30286.7140673927. The cubic root of 917285049 is about 971.6311694416.

The spelling of 917285049 in words is "nine hundred seventeen million, two hundred eighty-five thousand, forty-nine".