1023403399 has 2 divisors, whose sum is σ = 1023403400. Its totient is φ = 1023403398.

The previous prime is 1023403379. The next prime is 1023403421. The reversal of 1023403399 is 9933043201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1023403399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1023403379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511701699 + 511701700.

It is an arithmetic number, because the mean of its divisors is an integer number (511701700).

Almost surely, 2^1023403399 is an apocalyptic number.

1023403399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023403399 is an equidigital number, since it uses as much as digits as its factorization.

1023403399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 1023403399 is about 31990.6767512036. The cubic root of 1023403399 is about 1007.7410544512.

The spelling of 1023403399 in words is "one billion, twenty-three million, four hundred three thousand, three hundred ninety-nine".