140837939 has 4 divisors (see below), whose sum is σ = 153641400. Its totient is φ = 128034480.

The previous prime is 140837869. The next prime is 140837941. The reversal of 140837939 is 939738041.

It is a happy number.

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 140837939 - 2¹² = 140833843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140837939.

It is not an unprimeable number, because it can be changed into a prime (140837999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6401714 + ... + 6401735.

It is an arithmetic number, because the mean of its divisors is an integer number (38410350).

Almost surely, 2^140837939 is an apocalyptic number.

140837939 is a deficient number, since it is larger than the sum of its proper divisors (12803461).

140837939 is a wasteful number, since it uses less digits than its factorization.

140837939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12803460.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 140837939 is about 11867.5161259633. The cubic root of 140837939 is about 520.2833010016.

It can be divided in two parts, 14083 and 7939, that added together give a palindrome (22022).

The spelling of 140837939 in words is "one hundred forty million, eight hundred thirty-seven thousand, nine hundred thirty-nine".