149783387939 has 2 divisors, whose sum is σ = 149783387940. Its totient is φ = 149783387938.

The previous prime is 149783387911. The next prime is 149783387947. The reversal of 149783387939 is 939783387941.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149783387939 is a prime.

It is not a weakly prime, because it can be changed into another prime (149783387909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74891693969 + 74891693970.

It is an arithmetic number, because the mean of its divisors is an integer number (74891693970).

Almost surely, 2^149783387939 is an apocalyptic number.

149783387939 is a deficient number, since it is larger than the sum of its proper divisors (1).

149783387939 is an equidigital number, since it uses as much as digits as its factorization.

149783387939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 246903552, while the sum is 71.

The spelling of 149783387939 in words is "one hundred forty-nine billion, seven hundred eighty-three million, three hundred eighty-seven thousand, nine hundred thirty-nine".