140489221 has 4 divisors (see below), whose sum is σ = 146597472. Its totient is φ = 134380972.

The previous prime is 140489201. The next prime is 140489231. The reversal of 140489221 is 122984041.

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 not a de Polignac number, because 140489221 - 2⁵ = 140489189 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140489201) 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 in 3 ways as a sum of consecutive naturals, for example, 3054091 + ... + 3054136.

It is an arithmetic number, because the mean of its divisors is an integer number (36649368).

Almost surely, 2^140489221 is an apocalyptic number.

It is an amenable number.

140489221 is a deficient number, since it is larger than the sum of its proper divisors (6108251).

140489221 is an equidigital number, since it uses as much as digits as its factorization.

140489221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6108250.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 140489221 is about 11852.8148977363. The cubic root of 140489221 is about 519.8535349334.

The spelling of 140489221 in words is "one hundred forty million, four hundred eighty-nine thousand, two hundred twenty-one".