140439271 has 4 divisors (see below), whose sum is σ = 160502032. Its totient is φ = 120376512.

The previous prime is 140439259. The next prime is 140439289. The reversal of 140439271 is 172934041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140439271 - 2⁵ = 140439239 is a prime.

It is a super-2 number, since 2×140439271² = 39446377678022882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140439671) 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, 10031370 + ... + 10031383.

It is an arithmetic number, because the mean of its divisors is an integer number (40125508).

Almost surely, 2^140439271 is an apocalyptic number.

140439271 is a deficient number, since it is larger than the sum of its proper divisors (20062761).

140439271 is an equidigital number, since it uses as much as digits as its factorization.

140439271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20062760.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 140439271 is about 11850.7076160034. The cubic root of 140439271 is about 519.7919174847.

The spelling of 140439271 in words is "one hundred forty million, four hundred thirty-nine thousand, two hundred seventy-one".