140453449 has 2 divisors, whose sum is σ = 140453450. Its totient is φ = 140453448.

The previous prime is 140453431. The next prime is 140453459. The reversal of 140453449 is 944354041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75811849 + 64641600 = 8707^2 + 8040^2 .

It is a cyclic number.

It is not a de Polignac number, because 140453449 - 2⁷ = 140453321 is a prime.

It is not a weakly prime, because it can be changed into another prime (140453419) 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, 70226724 + 70226725.

It is an arithmetic number, because the mean of its divisors is an integer number (70226725).

Almost surely, 2^140453449 is an apocalyptic number.

It is an amenable number.

140453449 is a deficient number, since it is larger than the sum of its proper divisors (1).

140453449 is an equidigital number, since it uses as much as digits as its factorization.

140453449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 140453449 is about 11851.3057930339. The cubic root of 140453449 is about 519.8094087030.

The spelling of 140453449 in words is "one hundred forty million, four hundred fifty-three thousand, four hundred forty-nine".