1047866417 has 24 divisors (see below), whose sum is σ = 1205406360. Its totient is φ = 907345920.

The previous prime is 1047866341. The next prime is 1047866419. The reversal of 1047866417 is 7146687401.

It can be written as a sum of positive squares in 12 ways, for example, as 319730161 + 728136256 = 17881^2 + 26984^2 .

It is not a de Polignac number, because 1047866417 - 2²⁰ = 1046817841 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1047866419) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1634417 + ... + 1635057.

It is an arithmetic number, because the mean of its divisors is an integer number (50225265).

Almost surely, 2^1047866417 is an apocalyptic number.

1047866417 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1047866417 is a deficient number, since it is larger than the sum of its proper divisors (157539943).

1047866417 is a wasteful number, since it uses less digits than its factorization.

1047866417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253 (or 1240 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 1047866417 is about 32370.7648504017. The cubic root of 1047866417 is about 1015.7074563454.

The spelling of 1047866417 in words is "one billion, forty-seven million, eight hundred sixty-six thousand, four hundred seventeen".