1390547 has 2 divisors, whose sum is σ = 1390548. Its totient is φ = 1390546.

The previous prime is 1390541. The next prime is 1390573. The reversal of 1390547 is 7450931.

It is a weak prime.

It is an emirp because it is prime and its reverse (7450931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1390547 - 2⁶ = 1390483 is a prime.

It is not a weakly prime, because it can be changed into another prime (1390541) 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 as a sum of consecutive naturals, namely, 695273 + 695274.

It is an arithmetic number, because the mean of its divisors is an integer number (695274).

2^1390547 is an apocalyptic number.

1390547 is a deficient number, since it is larger than the sum of its proper divisors (1).

1390547 is an equidigital number, since it uses as much as digits as its factorization.

1390547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 1390547 is about 1179.2145691095. The cubic root of 1390547 is about 111.6165404585.

The spelling of 1390547 in words is "one million, three hundred ninety thousand, five hundred forty-seven".