140807471 has 4 divisors (see below), whose sum is σ = 160922832. Its totient is φ = 120692112.

The previous prime is 140807393. The next prime is 140807477. The reversal of 140807471 is 174708041.

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 140807471 - 2²² = 136613167 is a prime.

It is a super-3 number, since 3×140807471³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140807477) 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, 10057670 + ... + 10057683.

It is an arithmetic number, because the mean of its divisors is an integer number (40230708).

Almost surely, 2^140807471 is an apocalyptic number.

140807471 is a deficient number, since it is larger than the sum of its proper divisors (20115361).

140807471 is an equidigital number, since it uses as much as digits as its factorization.

140807471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20115360.

The product of its (nonzero) digits is 6272, while the sum is 32.

The square root of 140807471 is about 11866.2323843754. The cubic root of 140807471 is about 520.2457800160.

The spelling of 140807471 in words is "one hundred forty million, eight hundred seven thousand, four hundred seventy-one".