1047864087 has 24 divisors (see below), whose sum is σ = 1595538000. Its totient is φ = 679671648.

The previous prime is 1047864073. The next prime is 1047864109. The reversal of 1047864087 is 7804687401.

It is not a de Polignac number, because 1047864087 - 2⁷ = 1047863959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1047864487) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 22789 + ... + 51137.

It is an arithmetic number, because the mean of its divisors is an integer number (66480750).

Almost surely, 2^1047864087 is an apocalyptic number.

1047864087 is a deficient number, since it is larger than the sum of its proper divisors (547673913).

1047864087 is an equidigital number, since it uses as much as digits as its factorization.

1047864087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28432 (or 28389 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The square root of 1047864087 is about 32370.7288611177. The cubic root of 1047864087 is about 1015.7067035140.

The spelling of 1047864087 in words is "one billion, forty-seven million, eight hundred sixty-four thousand, eighty-seven".