101440049 has 2 divisors, whose sum is σ = 101440050. Its totient is φ = 101440048.

The previous prime is 101440021. The next prime is 101440061. The reversal of 101440049 is 940044101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76440049 + 25000000 = 8743^2 + 5000^2 .

It is a cyclic number.

It is not a de Polignac number, because 101440049 - 2¹² = 101435953 is a prime.

It is a super-2 number, since 2×101440049² = 20580167082244802, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (101440099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50720024 + 50720025.

It is an arithmetic number, because the mean of its divisors is an integer number (50720025).

Almost surely, 2^101440049 is an apocalyptic number.

It is an amenable number.

101440049 is a deficient number, since it is larger than the sum of its proper divisors (1).

101440049 is an equidigital number, since it uses as much as digits as its factorization.

101440049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 101440049 is about 10071.7450821593. The cubic root of 101440049 is about 466.3763116152.

The spelling of 101440049 in words is "one hundred one million, four hundred forty thousand, forty-nine".