123607987939 has 2 divisors, whose sum is σ = 123607987940. Its totient is φ = 123607987938.

The previous prime is 123607987927. The next prime is 123607987973. The reversal of 123607987939 is 939789706321.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (939789706321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123607987939 - 2⁵ = 123607987907 is a prime.

It is a super-3 number, since 3×123607987939³ (a number of 34 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (123607987039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61803993969 + 61803993970.

It is an arithmetic number, because the mean of its divisors is an integer number (61803993970).

Almost surely, 2^123607987939 is an apocalyptic number.

123607987939 is a deficient number, since it is larger than the sum of its proper divisors (1).

123607987939 is an equidigital number, since it uses as much as digits as its factorization.

123607987939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30862944, while the sum is 64.

The spelling of 123607987939 in words is "one hundred twenty-three billion, six hundred seven million, nine hundred eighty-seven thousand, nine hundred thirty-nine".