248455919 has 2 divisors, whose sum is σ = 248455920. Its totient is φ = 248455918.

The previous prime is 248455811. The next prime is 248455927. The reversal of 248455919 is 919554842.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-248455919 is a prime.

It is a super-2 number, since 2×248455919² = 123460687372269122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (248458919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124227959 + 124227960.

It is an arithmetic number, because the mean of its divisors is an integer number (124227960).

Almost surely, 2^248455919 is an apocalyptic number.

248455919 is a deficient number, since it is larger than the sum of its proper divisors (1).

248455919 is an equidigital number, since it uses as much as digits as its factorization.

248455919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 518400, while the sum is 47.

The square root of 248455919 is about 15762.4845440051. The cubic root of 248455919 is about 628.6608988567.

The spelling of 248455919 in words is "two hundred forty-eight million, four hundred fifty-five thousand, nine hundred nineteen".