1340847 has 16 divisors (see below), whose sum is σ = 2026080. Its totient is φ = 876096.

The previous prime is 1340837. The next prime is 1340861. The reversal of 1340847 is 7480431.

It is not a de Polignac number, because 1340847 - 2¹⁹ = 816559 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1340847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 963 + ... + 1899.

It is an arithmetic number, because the mean of its divisors is an integer number (126630).

2^1340847 is an apocalyptic number.

1340847 is a deficient number, since it is larger than the sum of its proper divisors (685233).

1340847 is an equidigital number, since it uses as much as digits as its factorization.

1340847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999 (or 993 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 1340847 is about 1157.9494807633. The cubic root of 1340847 is about 110.2706009909.

It can be divided in two parts, 1340 and 847, that added together give a 7-th power (2187 = 3⁷).

The spelling of 1340847 in words is "one million, three hundred forty thousand, eight hundred forty-seven".