140016091 has 4 divisors (see below), whose sum is σ = 140086800. Its totient is φ = 139945384.

The previous prime is 140016077. The next prime is 140016101. The reversal of 140016091 is 190610041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 190610041 = 31 ⋅6148711.

It is a cyclic number.

It is not a de Polignac number, because 140016091 - 2⁷ = 140015963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140016001) 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, 32296 + ... + 36373.

It is an arithmetic number, because the mean of its divisors is an integer number (35021700).

Almost surely, 2^140016091 is an apocalyptic number.

140016091 is a deficient number, since it is larger than the sum of its proper divisors (70709).

140016091 is an equidigital number, since it uses as much as digits as its factorization.

140016091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70708.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 140016091 is about 11832.8395155178. The cubic root of 140016091 is about 519.2693028570.

The spelling of 140016091 in words is "one hundred forty million, sixteen thousand, ninety-one".