140911973 has 4 divisors (see below), whose sum is σ = 142842348. Its totient is φ = 138981600.

The previous prime is 140911943. The next prime is 140911987. The reversal of 140911973 is 379119041.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 379119041 = 7 ⋅54159863.

It can be written as a sum of positive squares in 2 ways, for example, as 38962564 + 101949409 = 6242^2 + 10097^2 .

It is a cyclic number.

It is not a de Polignac number, because 140911973 - 2⁸ = 140911717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140911913) 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, 965078 + ... + 965223.

It is an arithmetic number, because the mean of its divisors is an integer number (35710587).

Almost surely, 2^140911973 is an apocalyptic number.

It is an amenable number.

140911973 is a deficient number, since it is larger than the sum of its proper divisors (1930375).

140911973 is an equidigital number, since it uses as much as digits as its factorization.

140911973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1930374.

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 140911973 is about 11870.6349029864. The cubic root of 140911973 is about 520.3744504623.

The spelling of 140911973 in words is "one hundred forty million, nine hundred eleven thousand, nine hundred seventy-three".