100140449 has 2 divisors, whose sum is σ = 100140450. Its totient is φ = 100140448.

The previous prime is 100140437. The next prime is 100140457. The reversal of 100140449 is 944041001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100140049 + 400 = 10007^2 + 20^2 .

It is an emirp because it is prime and its reverse (944041001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100140449 - 2⁴ = 100140433 is a prime.

It is not a weakly prime, because it can be changed into another prime (100140499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50070224 + 50070225.

It is an arithmetic number, because the mean of its divisors is an integer number (50070225).

Almost surely, 2^100140449 is an apocalyptic number.

It is an amenable number.

100140449 is a deficient number, since it is larger than the sum of its proper divisors (1).

100140449 is an equidigital number, since it uses as much as digits as its factorization.

100140449 is an evil number, because the sum of its binary digits is even.

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

The square root of 100140449 is about 10007.0199859898. The cubic root of 100140449 is about 464.3760838777.

The spelling of 100140449 in words is "one hundred million, one hundred forty thousand, four hundred forty-nine".