917888049 has 24 divisors (see below), whose sum is σ = 1438749312. Its totient is φ = 560532960.

The previous prime is 917887963. The next prime is 917888053. The reversal of 917888049 is 940888719.

It is not a de Polignac number, because 917888049 - 2⁷ = 917887921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 917887986 and 917888004.

It is not an unprimeable number, because it can be changed into a prime (917888249) 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 23 ways as a sum of consecutive naturals, for example, 14617 + ... + 45270.

It is an arithmetic number, because the mean of its divisors is an integer number (59947888).

Almost surely, 2^917888049 is an apocalyptic number.

It is an amenable number.

917888049 is a deficient number, since it is larger than the sum of its proper divisors (520861263).

917888049 is a wasteful number, since it uses less digits than its factorization.

917888049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60037 (or 60034 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 54.

The square root of 917888049 is about 30296.6672919646. The cubic root of 917888049 is about 971.8440313936.

The spelling of 917888049 in words is "nine hundred seventeen million, eight hundred eighty-eight thousand, forty-nine".