917801934 has 64 divisors (see below), whose sum is σ = 2193162240. Its totient is φ = 250529760.

The previous prime is 917801893. The next prime is 917801957. The reversal of 917801934 is 439108719.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 98397 + ... + 107319.

It is an arithmetic number, because the mean of its divisors is an integer number (34268160).

Almost surely, 2^917801934 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 917801934, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1096581120).

917801934 is an abundant number, since it is smaller than the sum of its proper divisors (1275360306).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

917801934 is a wasteful number, since it uses less digits than its factorization.

917801934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9045.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 917801934 is about 30295.2460627076. The cubic root of 917801934 is about 971.8136380843.

The spelling of 917801934 in words is "nine hundred seventeen million, eight hundred one thousand, nine hundred thirty-four".