140071913 has 2 divisors, whose sum is σ = 140071914. Its totient is φ = 140071912.

The previous prime is 140071901. The next prime is 140071969. The reversal of 140071913 is 319170041.

140071913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127870864 + 12201049 = 11308^2 + 3493^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140071913 is a prime.

It is a super-2 number, since 2×140071913² = 39240281622959138, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (140076913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70035956 + 70035957.

It is an arithmetic number, because the mean of its divisors is an integer number (70035957).

Almost surely, 2^140071913 is an apocalyptic number.

It is an amenable number.

140071913 is a deficient number, since it is larger than the sum of its proper divisors (1).

140071913 is an equidigital number, since it uses as much as digits as its factorization.

140071913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 140071913 is about 11835.1980549546. The cubic root of 140071913 is about 519.3383015925.

The spelling of 140071913 in words is "one hundred forty million, seventy-one thousand, nine hundred thirteen".