140806471 has 8 divisors (see below), whose sum is σ = 152135984. Its totient is φ = 129548160.

The previous prime is 140806469. The next prime is 140806499. The reversal of 140806471 is 174608041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140806471 - 2¹ = 140806469 is a prime.

It is a super-3 number, since 3×140806471³ (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 (140806411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13650 + ... + 21631.

It is an arithmetic number, because the mean of its divisors is an integer number (19016998).

Almost surely, 2^140806471 is an apocalyptic number.

140806471 is a deficient number, since it is larger than the sum of its proper divisors (11329513).

140806471 is a wasteful number, since it uses less digits than its factorization.

140806471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35601.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 140806471 is about 11866.1902479271. The cubic root of 140806471 is about 520.2445484359.

The spelling of 140806471 in words is "one hundred forty million, eight hundred six thousand, four hundred seventy-one".