1001105279 has 2 divisors, whose sum is σ = 1001105280. Its totient is φ = 1001105278.

The previous prime is 1001105267. The next prime is 1001105297. The reversal of 1001105279 is 9725011001.

Together with next prime (1001105297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1001105279 - 2⁸ = 1001105023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001105249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500552639 + 500552640.

It is an arithmetic number, because the mean of its divisors is an integer number (500552640).

Almost surely, 2^1001105279 is an apocalyptic number.

1001105279 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001105279 is an equidigital number, since it uses as much as digits as its factorization.

1001105279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 630, while the sum is 26.

The square root of 1001105279 is about 31640.2477708377. The cubic root of 1001105279 is about 1000.3682906787.

The spelling of 1001105279 in words is "one billion, one million, one hundred five thousand, two hundred seventy-nine".