1048775279 has 2 divisors, whose sum is σ = 1048775280. Its totient is φ = 1048775278.

The previous prime is 1048775267. The next prime is 1048775309. The reversal of 1048775279 is 9725778401.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1048775279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1048775179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 524387639 + 524387640.

It is an arithmetic number, because the mean of its divisors is an integer number (524387640).

Almost surely, 2^1048775279 is an apocalyptic number.

1048775279 is a deficient number, since it is larger than the sum of its proper divisors (1).

1048775279 is an equidigital number, since it uses as much as digits as its factorization.

1048775279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 987840, while the sum is 50.

The square root of 1048775279 is about 32384.8001228972. The cubic root of 1048775279 is about 1016.0010278448.

The spelling of 1048775279 in words is "one billion, forty-eight million, seven hundred seventy-five thousand, two hundred seventy-nine".