140013987 has 16 divisors (see below), whose sum is σ = 193516032. Its totient is φ = 89987040.

The previous prime is 140013953. The next prime is 140013997. The reversal of 140013987 is 789310041.

It is not a de Polignac number, because 140013987 - 2¹¹ = 140011939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140013947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2037 + ... + 16857.

It is an arithmetic number, because the mean of its divisors is an integer number (12094752).

Almost surely, 2^140013987 is an apocalyptic number.

140013987 is a deficient number, since it is larger than the sum of its proper divisors (53502045).

140013987 is a wasteful number, since it uses less digits than its factorization.

140013987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14938.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 140013987 is about 11832.7506100653. The cubic root of 140013987 is about 519.2667018509.

The spelling of 140013987 in words is "one hundred forty million, thirteen thousand, nine hundred eighty-seven".