140439793 has 8 divisors (see below), whose sum is σ = 152741736. Its totient is φ = 128352000.

The previous prime is 140439791. The next prime is 140439799. The reversal of 140439793 is 397934041.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 15626209 + 124813584 = 3953^2 + 11172^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 140439793 - 2¹ = 140439791 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140439791) 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, 52168 + ... + 54793.

It is an arithmetic number, because the mean of its divisors is an integer number (19092717).

Almost surely, 2^140439793 is an apocalyptic number.

140439793 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

140439793 is a deficient number, since it is larger than the sum of its proper divisors (12301943).

140439793 is a wasteful number, since it uses less digits than its factorization.

140439793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107075.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 140439793 is about 11850.7296399842. The cubic root of 140439793 is about 519.7925614904.

The spelling of 140439793 in words is "one hundred forty million, four hundred thirty-nine thousand, seven hundred ninety-three".