140448461 has 4 divisors (see below), whose sum is σ = 141310272. Its totient is φ = 139586652.

The previous prime is 140448409. The next prime is 140448499. The reversal of 140448461 is 164844041.

140448461 = 273² + 274² + ... + 761².

140448461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-140448461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140448401) 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, 430661 + ... + 430986.

It is an arithmetic number, because the mean of its divisors is an integer number (35327568).

Almost surely, 2^140448461 is an apocalyptic number.

It is an amenable number.

140448461 is a deficient number, since it is larger than the sum of its proper divisors (861811).

140448461 is an equidigital number, since it uses as much as digits as its factorization.

140448461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861810.

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 140448461 is about 11851.0953502197. The cubic root of 140448461 is about 519.8032552050.

The spelling of 140448461 in words is "one hundred forty million, four hundred forty-eight thousand, four hundred sixty-one".