140408017109 has 2 divisors, whose sum is σ = 140408017110. Its totient is φ = 140408017108.

The previous prime is 140408017097. The next prime is 140408017111. The reversal of 140408017109 is 901710804041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90465600625 + 49942416484 = 300775^2 + 223478^2 .

It is a cyclic number.

It is not a de Polignac number, because 140408017109 - 2³⁶ = 71688540373 is a prime.

It is a super-2 number, since 2×140408017109² (a number of 23 digits) contains 22 as substring.

Together with 140408017111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140408017709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70204008554 + 70204008555.

It is an arithmetic number, because the mean of its divisors is an integer number (70204008555).

Almost surely, 2^140408017109 is an apocalyptic number.

It is an amenable number.

140408017109 is a deficient number, since it is larger than the sum of its proper divisors (1).

140408017109 is an equidigital number, since it uses as much as digits as its factorization.

140408017109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 35.

The spelling of 140408017109 in words is "one hundred forty billion, four hundred eight million, seventeen thousand, one hundred nine".