1047987 has 6 divisors (see below), whose sum is σ = 1513772. Its totient is φ = 698652.

The previous prime is 1047979. The next prime is 1047989. The reversal of 1047987 is 7897401.

It is not a de Polignac number, because 1047987 - 2³ = 1047979 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1047989) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58213 + ... + 58230.

2^1047987 is an apocalyptic number.

1047987 is a deficient number, since it is larger than the sum of its proper divisors (465785).

1047987 is a wasteful number, since it uses less digits than its factorization.

1047987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116449 (or 116446 counting only the distinct ones).

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

The square root of 1047987 is about 1023.7123619455. The cubic root of 1047987 is about 101.5746415623.

The spelling of 1047987 in words is "one million, forty-seven thousand, nine hundred eighty-seven".