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109939789 is a prime number
BaseRepresentation
bin1101000110110…
…00110001001101
321122212112001001
412203120301031
5211121033124
614524220301
72503321111
oct643306115
9248775031
10109939789
1157070433
123099a691
1319a13b3b
141085b741
1599b9b44
hex68d8c4d

109939789 has 2 divisors, whose sum is σ = 109939790. Its totient is φ = 109939788.

The previous prime is 109939771. The next prime is 109939829. The reversal of 109939789 is 987939901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109369764 + 570025 = 10458^2 + 755^2 .

It is a cyclic number.

It is not a de Polignac number, because 109939789 - 225 = 76385357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109939729) 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, 54969894 + 54969895.

It is an arithmetic number, because the mean of its divisors is an integer number (54969895).

Almost surely, 2109939789 is an apocalyptic number.

It is an amenable number.

109939789 is a deficient number, since it is larger than the sum of its proper divisors (1).

109939789 is an equidigital number, since it uses as much as digits as its factorization.

109939789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1102248, while the sum is 55.

The square root of 109939789 is about 10485.2176419948. The cubic root of 109939789 is about 479.0545466653.

The spelling of 109939789 in words is "one hundred nine million, nine hundred thirty-nine thousand, seven hundred eighty-nine".