1001100449 has 2 divisors, whose sum is σ = 1001100450. Its totient is φ = 1001100448.

The previous prime is 1001100421. The next prime is 1001100473. The reversal of 1001100449 is 9440011001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 595360000 + 405740449 = 24400^2 + 20143^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001100449 - 2¹² = 1001096353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1001100449.

It is not a weakly prime, because it can be changed into another prime (1001100409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500550224 + 500550225.

It is an arithmetic number, because the mean of its divisors is an integer number (500550225).

Almost surely, 2^1001100449 is an apocalyptic number.

It is an amenable number.

1001100449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001100449 is an equidigital number, since it uses as much as digits as its factorization.

1001100449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1001100449 is about 31640.1714439097. The cubic root of 1001100449 is about 1000.3666818613.

The spelling of 1001100449 in words is "one billion, one million, one hundred thousand, four hundred forty-nine".