1478947 has 2 divisors, whose sum is σ = 1478948. Its totient is φ = 1478946.

The previous prime is 1478933. The next prime is 1478957. The reversal of 1478947 is 7498741.

It is a strong prime.

It is an emirp because it is prime and its reverse (7498741) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1478947 is a prime.

It is an alternating number because its digits alternate between odd and even.

1478947 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1478957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 739473 + 739474.

It is an arithmetic number, because the mean of its divisors is an integer number (739474).

2^1478947 is an apocalyptic number.

1478947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1478947 is an equidigital number, since it uses as much as digits as its factorization.

1478947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 40.

The square root of 1478947 is about 1216.1196487188. The cubic root of 1478947 is about 113.9333508026.

It can be divided in two parts, 14 and 78947, that added together give a square (78961 = 281²).

The spelling of 1478947 in words is "one million, four hundred seventy-eight thousand, nine hundred forty-seven".