917947052 has 12 divisors (see below), whose sum is σ = 1752444456. Its totient is φ = 417248640.

The previous prime is 917947039. The next prime is 917947061. The reversal of 917947052 is 250749719.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 20862433 = 917947052 / (9 + 1 + 7 + 9 + 4 + 7 + 0 + 5 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 917946994 and 917947012.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10431173 + ... + 10431260.

It is an arithmetic number, because the mean of its divisors is an integer number (146037038).

Almost surely, 2^917947052 is an apocalyptic number.

It is an amenable number.

917947052 is a deficient number, since it is larger than the sum of its proper divisors (834497404).

917947052 is a wasteful number, since it uses less digits than its factorization.

917947052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20862448 (or 20862446 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 44.

The square root of 917947052 is about 30297.6410302848. The cubic root of 917947052 is about 971.8648547336.

The spelling of 917947052 in words is "nine hundred seventeen million, nine hundred forty-seven thousand, fifty-two".