140389789 has 2 divisors, whose sum is σ = 140389790. Its totient is φ = 140389788.

The previous prime is 140389771. The next prime is 140389807. The reversal of 140389789 is 987983041.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (140389771) and next prime (140389807).

It can be written as a sum of positive squares in only one way, i.e., 127125625 + 13264164 = 11275^2 + 3642^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140389789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140389759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70194894 + 70194895.

It is an arithmetic number, because the mean of its divisors is an integer number (70194895).

Almost surely, 2^140389789 is an apocalyptic number.

It is an amenable number.

140389789 is a deficient number, since it is larger than the sum of its proper divisors (1).

140389789 is an equidigital number, since it uses as much as digits as its factorization.

140389789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 140389789 is about 11848.6197086412. The cubic root of 140389789 is about 519.7308629454.

The spelling of 140389789 in words is "one hundred forty million, three hundred eighty-nine thousand, seven hundred eighty-nine".