140806923 has 4 divisors (see below), whose sum is σ = 187742568. Its totient is φ = 93871280.

The previous prime is 140806921. The next prime is 140806931. The reversal of 140806923 is 329608041.

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 140806923 - 2¹ = 140806921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140806921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23467818 + ... + 23467823.

It is an arithmetic number, because the mean of its divisors is an integer number (46935642).

Almost surely, 2^140806923 is an apocalyptic number.

140806923 is a deficient number, since it is larger than the sum of its proper divisors (46935645).

140806923 is an equidigital number, since it uses as much as digits as its factorization.

140806923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46935644.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 140806923 is about 11866.2092936203. The cubic root of 140806923 is about 520.2451051108.

The spelling of 140806923 in words is "one hundred forty million, eight hundred six thousand, nine hundred twenty-three".