140439996 has 18 divisors (see below), whose sum is σ = 355001192. Its totient is φ = 46813320.

The previous prime is 140439979. The next prime is 140439997. The reversal of 140439996 is 699934041.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140439997) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1950520 + ... + 1950591.

Almost surely, 2^140439996 is an apocalyptic number.

It is an amenable number.

140439996 is an abundant number, since it is smaller than the sum of its proper divisors (214561196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140439996 is a wasteful number, since it uses less digits than its factorization.

140439996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3901121 (or 3901116 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 140439996 is about 11850.7382048546. The cubic root of 140439996 is about 519.7928119366.

The spelling of 140439996 in words is "one hundred forty million, four hundred thirty-nine thousand, nine hundred ninety-six".