1049586921 has 24 divisors (see below), whose sum is σ = 1559954760. Its totient is φ = 679622400.

The previous prime is 1049586913. The next prime is 1049586947. The reversal of 1049586921 is 1296859401.

1049586921 is a `hidden beast` number, since 1 + 0 + 49 + 586 + 9 + 21 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 408484521 + 641102400 = 20211^2 + 25320^2 .

It is not a de Polignac number, because 1049586921 - 2³ = 1049586913 is a prime.

It is a super-2 number, since 2×1049586921² = 2203265409468520482, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1049585921) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 78291 + ... + 90711.

It is an arithmetic number, because the mean of its divisors is an integer number (64998115).

Almost surely, 2^1049586921 is an apocalyptic number.

It is an amenable number.

1049586921 is a deficient number, since it is larger than the sum of its proper divisors (510367839).

1049586921 is a wasteful number, since it uses less digits than its factorization.

1049586921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12697 (or 12694 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 1049586921 is about 32397.3289176747. The cubic root of 1049586921 is about 1016.2630529861.

The spelling of 1049586921 in words is "one billion, forty-nine million, five hundred eighty-six thousand, nine hundred twenty-one".