140784091 has 16 divisors (see below), whose sum is σ = 170012160. Its totient is φ = 113883840.

The previous prime is 140784079. The next prime is 140784097. The reversal of 140784091 is 190487041.

It is not a de Polignac number, because 140784091 - 2¹⁹ = 140259803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140784097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35490 + ... + 39256.

It is an arithmetic number, because the mean of its divisors is an integer number (10625760).

Almost surely, 2^140784091 is an apocalyptic number.

140784091 is a deficient number, since it is larger than the sum of its proper divisors (29228069).

140784091 is a wasteful number, since it uses less digits than its factorization.

140784091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4074.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 140784091 is about 11865.2471950651. The cubic root of 140784091 is about 520.2169841490.

The spelling of 140784091 in words is "one hundred forty million, seven hundred eighty-four thousand, ninety-one".