1047387 has 16 divisors (see below), whose sum is σ = 1613952. Its totient is φ = 597120.

The previous prime is 1047379. The next prime is 1047391. The reversal of 1047387 is 7837401.

It is a happy number.

It is not a de Polignac number, because 1047387 - 2³ = 1047379 is a prime.

1047387 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1047307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 373 + ... + 1494.

It is an arithmetic number, because the mean of its divisors is an integer number (100872).

2^1047387 is an apocalyptic number.

1047387 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1047387 is a deficient number, since it is larger than the sum of its proper divisors (566565).

1047387 is a wasteful number, since it uses less digits than its factorization.

1047387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1898.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 1047387 is about 1023.4192689216. The cubic root of 1047387 is about 101.5552531476. Note that the first 3 decimals are identical.

The spelling of 1047387 in words is "one million, forty-seven thousand, three hundred eighty-seven".