1286947 has 6 divisors (see below), whose sum is σ = 1324532. Its totient is φ = 1249752.

The previous prime is 1286941. The next prime is 1286953. The reversal of 1286947 is 7496821.

It is an interprime number because it is at equal distance from previous prime (1286941) and next prime (1286953).

It is not a de Polignac number, because 1286947 - 2³ = 1286939 is a prime.

It is a Duffinian number.

Its product of digits (24192) is a multiple of the sum of its prime divisors (216).

It is not an unprimeable number, because it can be changed into a prime (1286941) 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, 7353 + ... + 7525.

2^1286947 is an apocalyptic number.

1286947 is a deficient number, since it is larger than the sum of its proper divisors (37585).

1286947 is an frugal number, since it uses more digits than its factorization.

1286947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389 (or 216 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 1286947 is about 1134.4368647042. The cubic root of 1286947 is about 108.7727780710.

The spelling of 1286947 in words is "one million, two hundred eighty-six thousand, nine hundred forty-seven".