103199729 has 2 divisors, whose sum is σ = 103199730. Its totient is φ = 103199728.

The previous prime is 103199693. The next prime is 103199731. The reversal of 103199729 is 927991301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101103025 + 2096704 = 10055^2 + 1448^2 .

It is an emirp because it is prime and its reverse (927991301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 103199729 - 2¹⁶ = 103134193 is a prime.

Together with 103199731, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (103199329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51599864 + 51599865.

It is an arithmetic number, because the mean of its divisors is an integer number (51599865).

Almost surely, 2^103199729 is an apocalyptic number.

It is an amenable number.

103199729 is a deficient number, since it is larger than the sum of its proper divisors (1).

103199729 is an equidigital number, since it uses as much as digits as its factorization.

103199729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30618, while the sum is 41.

The square root of 103199729 is about 10158.7267410833. The cubic root of 103199729 is about 469.0576091977.

The spelling of 103199729 in words is "one hundred three million, one hundred ninety-nine thousand, seven hundred twenty-nine".