102987739 has 2 divisors, whose sum is σ = 102987740. Its totient is φ = 102987738.

The previous prime is 102987719. The next prime is 102987749. The reversal of 102987739 is 937789201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102987739 - 2¹⁹ = 102463451 is a prime.

It is not a weakly prime, because it can be changed into another prime (102987719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51493869 + 51493870.

It is an arithmetic number, because the mean of its divisors is an integer number (51493870).

Almost surely, 2^102987739 is an apocalyptic number.

102987739 is a deficient number, since it is larger than the sum of its proper divisors (1).

102987739 is an equidigital number, since it uses as much as digits as its factorization.

102987739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 46.

The square root of 102987739 is about 10148.2874910006. The cubic root of 102987739 is about 468.7362140183.

The spelling of 102987739 in words is "one hundred two million, nine hundred eighty-seven thousand, seven hundred thirty-nine".