140000039 has 4 divisors (see below), whose sum is σ = 141386280. Its totient is φ = 138613800.

The previous prime is 139999991. The next prime is 140000041. The reversal of 140000039 is 930000041.

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 140000039 - 2¹² = 139995943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139999981 and 140000026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140000059) 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, 692969 + ... + 693170.

It is an arithmetic number, because the mean of its divisors is an integer number (35346570).

Almost surely, 2^140000039 is an apocalyptic number.

140000039 is a deficient number, since it is larger than the sum of its proper divisors (1386241).

140000039 is a wasteful number, since it uses less digits than its factorization.

140000039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386240.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 140000039 is about 11832.1612142499. The cubic root of 140000039 is about 519.2494584011.

Subtracting from 140000039 its product of nonzero digits (108), we obtain a palindrome (139999931).

The spelling of 140000039 in words is "one hundred forty million, thirty-nine", and thus it is an aban number.