140944091 has 2 divisors, whose sum is σ = 140944092. Its totient is φ = 140944090.

The previous prime is 140944051. The next prime is 140944123. The reversal of 140944091 is 190449041.

140944091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (140944123) can be obtained adding 140944091 to its sum of digits (32).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140944091 - 2¹⁰ = 140943067 is a prime.

It is not a weakly prime, because it can be changed into another prime (140944051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70472045 + 70472046.

It is an arithmetic number, because the mean of its divisors is an integer number (70472046).

Almost surely, 2^140944091 is an apocalyptic number.

140944091 is a deficient number, since it is larger than the sum of its proper divisors (1).

140944091 is an equidigital number, since it uses as much as digits as its factorization.

140944091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 140944091 is about 11871.9876600340. The cubic root of 140944091 is about 520.4139836937.

The spelling of 140944091 in words is "one hundred forty million, nine hundred forty-four thousand, ninety-one".