1248854839 has 2 divisors, whose sum is σ = 1248854840. Its totient is φ = 1248854838.

The previous prime is 1248854807. The next prime is 1248854861. The reversal of 1248854839 is 9384588421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1248854839 - 2⁵ = 1248854807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1248854879) 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, 624427419 + 624427420.

It is an arithmetic number, because the mean of its divisors is an integer number (624427420).

Almost surely, 2^1248854839 is an apocalyptic number.

1248854839 is a deficient number, since it is larger than the sum of its proper divisors (1).

1248854839 is an equidigital number, since it uses as much as digits as its factorization.

1248854839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2211840, while the sum is 52.

The square root of 1248854839 is about 35339.1403262728. The cubic root of 1248854839 is about 1076.8882878980. Note that the first 3 decimals are identical.

The spelling of 1248854839 in words is "one billion, two hundred forty-eight million, eight hundred fifty-four thousand, eight hundred thirty-nine".