917872046 has 16 divisors (see below), whose sum is σ = 1694533344. Its totient is φ = 363114144.

The previous prime is 917872031. The next prime is 917872057. The reversal of 917872046 is 640278719.

It is a super-2 number, since 2×917872046² = 1684978185656452232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 917871988 and 917872006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2521445 + ... + 2521808.

It is an arithmetic number, because the mean of its divisors is an integer number (105908334).

Almost surely, 2^917872046 is an apocalyptic number.

917872046 is a deficient number, since it is larger than the sum of its proper divisors (776661298).

917872046 is a wasteful number, since it uses less digits than its factorization.

917872046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5043275.

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 917872046 is about 30296.4031858569. The cubic root of 917872046 is about 971.8383834607.

The spelling of 917872046 in words is "nine hundred seventeen million, eight hundred seventy-two thousand, forty-six".