123595949 has 2 divisors, whose sum is σ = 123595950. Its totient is φ = 123595948.

The previous prime is 123595937. The next prime is 123595957. The reversal of 123595949 is 949595321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101646724 + 21949225 = 10082^2 + 4685^2 .

It is an emirp because it is prime and its reverse (949595321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123595949 - 2¹⁶ = 123530413 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123595919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61797974 + 61797975.

It is an arithmetic number, because the mean of its divisors is an integer number (61797975).

Almost surely, 2^123595949 is an apocalyptic number.

It is an amenable number.

123595949 is a deficient number, since it is larger than the sum of its proper divisors (1).

123595949 is an equidigital number, since it uses as much as digits as its factorization.

123595949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 437400, while the sum is 47.

The square root of 123595949 is about 11117.3714968962. The cubic root of 123595949 is about 498.1208786531.

The spelling of 123595949 in words is "one hundred twenty-three million, five hundred ninety-five thousand, nine hundred forty-nine".