1284939 has 6 divisors (see below), whose sum is σ = 1856036. Its totient is φ = 856620.

The previous prime is 1284937. The next prime is 1284967. The reversal of 1284939 is 9394821.

It is not a de Polignac number, because 1284939 - 2¹ = 1284937 is a prime.

It is a Duffinian number.

1284939 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1284931) 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, 71377 + ... + 71394.

2^1284939 is an apocalyptic number.

1284939 is a deficient number, since it is larger than the sum of its proper divisors (571097).

1284939 is a wasteful number, since it uses less digits than its factorization.

1284939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142777 (or 142774 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 1284939 is about 1133.5514986096. The cubic root of 1284939 is about 108.7161765602.

The spelling of 1284939 in words is "one million, two hundred eighty-four thousand, nine hundred thirty-nine".