1543879 has 2 divisors, whose sum is σ = 1543880. Its totient is φ = 1543878.

The previous prime is 1543859. The next prime is 1543891. The reversal of 1543879 is 9783451.

It is a strong prime.

It is an emirp because it is prime and its reverse (9783451) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1543879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1543819) 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, 771939 + 771940.

It is an arithmetic number, because the mean of its divisors is an integer number (771940).

2^1543879 is an apocalyptic number.

1543879 is a deficient number, since it is larger than the sum of its proper divisors (1).

1543879 is an equidigital number, since it uses as much as digits as its factorization.

1543879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 37.

The square root of 1543879 is about 1242.5292753090. The cubic root of 1543879 is about 115.5769119729.

The spelling of 1543879 in words is "one million, five hundred forty-three thousand, eight hundred seventy-nine".