917940280464 has 45 divisors (see below), whose sum is σ = 2568990044569. Its totient is φ = 305976261120.

The previous prime is 917940280457. The next prime is 917940280507. The reversal of 917940280464 is 464082049719.

The square root of 917940280464 is 958092.

It is a perfect power (a square), and thus also a powerful number.

917940280464 is a `hidden beast` number, since 9 + 17 + 94 + 0 + 2 + 80 + 464 = 666.

It can be written as a sum of positive squares in only one way, i.e., 647207378064 + 270732902400 = 804492^2 + 520320^2 .

It is a super-2 number, since 2×917940280464² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 917940280464.

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 8 ways as a sum of consecutive naturals, for example, 11457184 + ... + 11537024.

Almost surely, 2^917940280464 is an apocalyptic number.

917940280464 is the 958092-nd square number.

It is an amenable number.

917940280464 is an abundant number, since it is smaller than the sum of its proper divisors (1651049764105).

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

917940280464 is an frugal number, since it uses more digits than its factorization.

917940280464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159696 (or 79846 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 917940280464 in words is "nine hundred seventeen billion, nine hundred forty million, two hundred eighty thousand, four hundred sixty-four".