140892109 has 2 divisors, whose sum is σ = 140892110. Its totient is φ = 140892108.

The previous prime is 140892097. The next prime is 140892133. The reversal of 140892109 is 901298041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100060009 + 40832100 = 10003^2 + 6390^2 .

It is a cyclic number.

It is not a de Polignac number, because 140892109 - 2⁵ = 140892077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140895109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70446054 + 70446055.

It is an arithmetic number, because the mean of its divisors is an integer number (70446055).

Almost surely, 2^140892109 is an apocalyptic number.

It is an amenable number.

140892109 is a deficient number, since it is larger than the sum of its proper divisors (1).

140892109 is an equidigital number, since it uses as much as digits as its factorization.

140892109 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 34.

The square root of 140892109 is about 11869.7981869954. The cubic root of 140892109 is about 520.3499973619.

The spelling of 140892109 in words is "one hundred forty million, eight hundred ninety-two thousand, one hundred nine".