140843091 has 8 divisors (see below), whose sum is σ = 187862464. Its totient is φ = 93859560.

The previous prime is 140843081. The next prime is 140843093. The reversal of 140843091 is 190348041.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 140843091 - 2⁷ = 140842963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140843093) 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 7 ways as a sum of consecutive naturals, for example, 2196 + ... + 16926.

It is an arithmetic number, because the mean of its divisors is an integer number (23482808).

Almost surely, 2^140843091 is an apocalyptic number.

140843091 is a deficient number, since it is larger than the sum of its proper divisors (47019373).

140843091 is a wasteful number, since it uses less digits than its factorization.

140843091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17921.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 140843091 is about 11867.7331870918. The cubic root of 140843091 is about 520.2896450945.

The spelling of 140843091 in words is "one hundred forty million, eight hundred forty-three thousand, ninety-one".