140949993 has 4 divisors (see below), whose sum is σ = 187933328. Its totient is φ = 93966660.

The previous prime is 140949979. The next prime is 140950013. The reversal of 140949993 is 399949041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 399949041 = 3 ⋅133316347.

It is not a de Polignac number, because 140949993 - 2⁹ = 140949481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140949973) 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, 23491663 + ... + 23491668.

It is an arithmetic number, because the mean of its divisors is an integer number (46983332).

Almost surely, 2^140949993 is an apocalyptic number.

It is an amenable number.

140949993 is a deficient number, since it is larger than the sum of its proper divisors (46983335).

140949993 is an equidigital number, since it uses as much as digits as its factorization.

140949993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46983334.

The product of its (nonzero) digits is 314928, while the sum is 48.

The square root of 140949993 is about 11872.2362257496. The cubic root of 140949993 is about 520.4212476626.

The spelling of 140949993 in words is "one hundred forty million, nine hundred forty-nine thousand, nine hundred ninety-three".