102408739 has 2 divisors, whose sum is σ = 102408740. Its totient is φ = 102408738.

The previous prime is 102408721. The next prime is 102408769. The reversal of 102408739 is 937804201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102408739 - 2¹⁷ = 102277667 is a prime.

It is not a weakly prime, because it can be changed into another prime (102408769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51204369 + 51204370.

It is an arithmetic number, because the mean of its divisors is an integer number (51204370).

Almost surely, 2^102408739 is an apocalyptic number.

102408739 is a deficient number, since it is larger than the sum of its proper divisors (1).

102408739 is an equidigital number, since it uses as much as digits as its factorization.

102408739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 102408739 is about 10119.7203024590. The cubic root of 102408739 is about 467.8561465850.

The spelling of 102408739 in words is "one hundred two million, four hundred eight thousand, seven hundred thirty-nine".