140399871 has 8 divisors (see below), whose sum is σ = 187929264. Its totient is φ = 93235200.

The previous prime is 140399863. The next prime is 140399879. The reversal of 140399871 is 178993041.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (140399863) and next prime (140399879).

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

It is not a de Polignac number, because 140399871 - 2³ = 140399863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140399879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90280 + ... + 91821.

It is an arithmetic number, because the mean of its divisors is an integer number (23491158).

Almost surely, 2^140399871 is an apocalyptic number.

140399871 is a deficient number, since it is larger than the sum of its proper divisors (47529393).

140399871 is a wasteful number, since it uses less digits than its factorization.

140399871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182361.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 140399871 is about 11849.0451514036. The cubic root of 140399871 is about 519.7433040238.

The spelling of 140399871 in words is "one hundred forty million, three hundred ninety-nine thousand, eight hundred seventy-one".