1087947 has 18 divisors (see below), whose sum is σ = 1828788. Its totient is φ = 621432.

The previous prime is 1087937. The next prime is 1087963. The reversal of 1087947 is 7497801.

It is not a de Polignac number, because 1087947 - 2¹⁰ = 1086923 is a prime.

1087947 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1087907) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 793 + ... + 1674.

2^1087947 is an apocalyptic number.

1087947 is a deficient number, since it is larger than the sum of its proper divisors (740841).

1087947 is a wasteful number, since it uses less digits than its factorization.

1087947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2487 (or 2477 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 1087947 is about 1043.0469788078. The cubic root of 1087947 is about 102.8495935266.

It can be divided in two parts, 108794 and 7, that added together give a palindrome (108801).

The spelling of 1087947 in words is "one million, eighty-seven thousand, nine hundred forty-seven".