248779 has 2 divisors, whose sum is σ = 248780. Its totient is φ = 248778.

The previous prime is 248753. The next prime is 248783. The reversal of 248779 is 977842.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 248779 - 2⁹ = 248267 is a prime.

It is a d-powerful number, because it can be written as 2¹⁵ + 4⁸ + 7² + 8⁵ + 7⁶ + 9 .

It is a nialpdrome in base 12.

It is a zygodrome in base 12.

It is not a weakly prime, because it can be changed into another prime (248719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124389 + 124390.

It is an arithmetic number, because the mean of its divisors is an integer number (124390).

2²⁴⁸⁷⁷⁹ is an apocalyptic number.

248779 is a deficient number, since it is larger than the sum of its proper divisors (1).

248779 is an equidigital number, since it uses as much as digits as its factorization.

248779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 37.

The square root of 248779 is about 498.7775055072. Note that the first 3 decimals coincide. The cubic root of 248779 is about 62.8933275030.

The spelling of 248779 in words is "two hundred forty-eight thousand, seven hundred seventy-nine".