1103279399 has 2 divisors, whose sum is σ = 1103279400. Its totient is φ = 1103279398.

The previous prime is 1103279381. The next prime is 1103279449. The reversal of 1103279399 is 9939723011.

It is a weak prime.

It is an emirp because it is prime and its reverse (9939723011) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1103279399 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1103279329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551639699 + 551639700.

It is an arithmetic number, because the mean of its divisors is an integer number (551639700).

Almost surely, 2^1103279399 is an apocalyptic number.

1103279399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1103279399 is an equidigital number, since it uses as much as digits as its factorization.

1103279399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 91854, while the sum is 44.

The square root of 1103279399 is about 33215.6499108477. The cubic root of 1103279399 is about 1033.3049335818.

The spelling of 1103279399 in words is "one billion, one hundred three million, two hundred seventy-nine thousand, three hundred ninety-nine".