1109525399 has 2 divisors, whose sum is σ = 1109525400. Its totient is φ = 1109525398.

The previous prime is 1109525369. The next prime is 1109525407. The reversal of 1109525399 is 9935259011.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1109525399 is a prime.

It is a super-2 number, since 2×1109525399² = 2462093222052218402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1109525369) 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, 554762699 + 554762700.

It is an arithmetic number, because the mean of its divisors is an integer number (554762700).

Almost surely, 2^1109525399 is an apocalyptic number.

1109525399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109525399 is an equidigital number, since it uses as much as digits as its factorization.

1109525399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 109350, while the sum is 44.

The square root of 1109525399 is about 33309.5391592258. The cubic root of 1109525399 is about 1035.2512164511.

The spelling of 1109525399 in words is "one billion, one hundred nine million, five hundred twenty-five thousand, three hundred ninety-nine".