140387947 has 8 divisors (see below), whose sum is σ = 160524000. Its totient is φ = 120272064.

The previous prime is 140387917. The next prime is 140387957. The reversal of 140387947 is 749783041.

140387947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140387947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140387917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15429 + ... + 22777.

It is an arithmetic number, because the mean of its divisors is an integer number (20065500).

Almost surely, 2^140387947 is an apocalyptic number.

140387947 is a deficient number, since it is larger than the sum of its proper divisors (20136053).

140387947 is an equidigital number, since it uses as much as digits as its factorization.

140387947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10085.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 140387947 is about 11848.5419778131. The cubic root of 140387947 is about 519.7285898730.

The spelling of 140387947 in words is "one hundred forty million, three hundred eighty-seven thousand, nine hundred forty-seven".