917950649 has 48 divisors (see below), whose sum is σ = 1254685824. Its totient is φ = 654635520.

The previous prime is 917950633. The next prime is 917950651. The reversal of 917950649 is 946059719.

It is not a de Polignac number, because 917950649 - 2⁴ = 917950633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 917950597 and 917950606.

It is not an unprimeable number, because it can be changed into a prime (917950609) 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 47 ways as a sum of consecutive naturals, for example, 531902 + ... + 533624.

It is an arithmetic number, because the mean of its divisors is an integer number (26139288).

Almost surely, 2^917950649 is an apocalyptic number.

It is an amenable number.

917950649 is a deficient number, since it is larger than the sum of its proper divisors (336735175).

917950649 is a wasteful number, since it uses less digits than its factorization.

917950649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806 (or 1795 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 50.

The square root of 917950649 is about 30297.7003912838. The cubic root of 917950649 is about 971.8661241581.

The spelling of 917950649 in words is "nine hundred seventeen million, nine hundred fifty thousand, six hundred forty-nine".