140455093 has 4 divisors (see below), whose sum is σ = 140500108. Its totient is φ = 140410080.

The previous prime is 140455057. The next prime is 140455109. The reversal of 140455093 is 390554041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 390554041 = 307 ⋅1272163.

It can be written as a sum of positive squares in 2 ways, for example, as 139641489 + 813604 = 11817^2 + 902^2 .

It is a cyclic number.

It is not a de Polignac number, because 140455093 - 2¹⁷ = 140324021 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 (140455013) 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, 17448 + ... + 24193.

It is an arithmetic number, because the mean of its divisors is an integer number (35125027).

Almost surely, 2^140455093 is an apocalyptic number.

It is an amenable number.

140455093 is a deficient number, since it is larger than the sum of its proper divisors (45015).

140455093 is an equidigital number, since it uses as much as digits as its factorization.

140455093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45014.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 140455093 is about 11851.3751522766. The cubic root of 140455093 is about 519.8114368087.

The spelling of 140455093 in words is "one hundred forty million, four hundred fifty-five thousand, ninety-three".