109437649 has 2 divisors, whose sum is σ = 109437650. Its totient is φ = 109437648.

The previous prime is 109437607. The next prime is 109437661. The reversal of 109437649 is 946734901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101143249 + 8294400 = 10057^2 + 2880^2 .

It is a cyclic number.

It is not a de Polignac number, because 109437649 - 2¹⁷ = 109306577 is a prime.

It is not a weakly prime, because it can be changed into another prime (104437649) 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, 54718824 + 54718825.

It is an arithmetic number, because the mean of its divisors is an integer number (54718825).

Almost surely, 2^109437649 is an apocalyptic number.

It is an amenable number.

109437649 is a deficient number, since it is larger than the sum of its proper divisors (1).

109437649 is an equidigital number, since it uses as much as digits as its factorization.

109437649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 109437649 is about 10461.2450979795. The cubic root of 109437649 is about 478.3240873893.

The spelling of 109437649 in words is "one hundred nine million, four hundred thirty-seven thousand, six hundred forty-nine".