123493709 has 2 divisors, whose sum is σ = 123493710. Its totient is φ = 123493708.

The previous prime is 123493691. The next prime is 123493717. The reversal of 123493709 is 907394321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106296100 + 17197609 = 10310^2 + 4147^2 .

It is a cyclic number.

It is not a de Polignac number, because 123493709 - 2⁸ = 123493453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123493759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61746854 + 61746855.

It is an arithmetic number, because the mean of its divisors is an integer number (61746855).

Almost surely, 2^123493709 is an apocalyptic number.

It is an amenable number.

123493709 is a deficient number, since it is larger than the sum of its proper divisors (1).

123493709 is an equidigital number, since it uses as much as digits as its factorization.

123493709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 123493709 is about 11112.7723363704. The cubic root of 123493709 is about 497.9834903104.

The spelling of 123493709 in words is "one hundred twenty-three million, four hundred ninety-three thousand, seven hundred nine".