102957839 has 2 divisors, whose sum is σ = 102957840. Its totient is φ = 102957838.

The previous prime is 102957823. The next prime is 102957887. The reversal of 102957839 is 938759201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102957839 - 2⁴ = 102957823 is a prime.

It is a super-2 number, since 2×102957839² = 21200633223099842, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102957839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102957889) 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, 51478919 + 51478920.

It is an arithmetic number, because the mean of its divisors is an integer number (51478920).

Almost surely, 2^102957839 is an apocalyptic number.

102957839 is a deficient number, since it is larger than the sum of its proper divisors (1).

102957839 is an equidigital number, since it uses as much as digits as its factorization.

102957839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 102957839 is about 10146.8142291066. The cubic root of 102957839 is about 468.6908475521.

The spelling of 102957839 in words is "one hundred two million, nine hundred fifty-seven thousand, eight hundred thirty-nine".