140553449 has 4 divisors (see below), whose sum is σ = 140847360. Its totient is φ = 140259540.

The previous prime is 140553419. The next prime is 140553461. The reversal of 140553449 is 944355041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140553449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140553409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146237 + ... + 147194.

It is an arithmetic number, because the mean of its divisors is an integer number (35211840).

Almost surely, 2^140553449 is an apocalyptic number.

It is an amenable number.

140553449 is a deficient number, since it is larger than the sum of its proper divisors (293911).

140553449 is an equidigital number, since it uses as much as digits as its factorization.

140553449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293910.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 140553449 is about 11855.5239867329. The cubic root of 140553449 is about 519.9327440136.

The spelling of 140553449 in words is "one hundred forty million, five hundred fifty-three thousand, four hundred forty-nine".