1099392389 has 2 divisors, whose sum is σ = 1099392390. Its totient is φ = 1099392388.

The previous prime is 1099392379. The next prime is 1099392419. The reversal of 1099392389 is 9832939901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 972379489 + 127012900 = 31183^2 + 11270^2 .

It is a cyclic number.

It is not a de Polignac number, because 1099392389 - 2²⁸ = 830956933 is a prime.

It is a super-2 number, since 2×1099392389² = 2417327249982254642, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1099392389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1099392319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549696194 + 549696195.

It is an arithmetic number, because the mean of its divisors is an integer number (549696195).

Almost surely, 2^1099392389 is an apocalyptic number.

It is an amenable number.

1099392389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1099392389 is an equidigital number, since it uses as much as digits as its factorization.

1099392389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 944784, while the sum is 53.

The square root of 1099392389 is about 33157.0865577783. The cubic root of 1099392389 is about 1032.0900123424.

The spelling of 1099392389 in words is "one billion, ninety-nine million, three hundred ninety-two thousand, three hundred eighty-nine".