248784479 has 2 divisors, whose sum is σ = 248784480. Its totient is φ = 248784478.

The previous prime is 248784469. The next prime is 248784493. The reversal of 248784479 is 974487842.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 248784479 - 2⁴ = 248784463 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 248784479.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (248784469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124392239 + 124392240.

It is an arithmetic number, because the mean of its divisors is an integer number (124392240).

Almost surely, 2^248784479 is an apocalyptic number.

248784479 is a deficient number, since it is larger than the sum of its proper divisors (1).

248784479 is an equidigital number, since it uses as much as digits as its factorization.

248784479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3612672, while the sum is 53.

The square root of 248784479 is about 15772.9033154965. The cubic root of 248784479 is about 628.9378921138.

The spelling of 248784479 in words is "two hundred forty-eight million, seven hundred eighty-four thousand, four hundred seventy-nine".