109854649 has 2 divisors, whose sum is σ = 109854650. Its totient is φ = 109854648.

The previous prime is 109854643. The next prime is 109854671. The reversal of 109854649 is 946458901.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109579024 + 275625 = 10468^2 + 525^2 .

It is a cyclic number.

It is not a de Polignac number, because 109854649 - 2⁵ = 109854617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 109854599 and 109854608.

It is not a weakly prime, because it can be changed into another prime (109854643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54927324 + 54927325.

It is an arithmetic number, because the mean of its divisors is an integer number (54927325).

Almost surely, 2^109854649 is an apocalyptic number.

It is an amenable number.

109854649 is a deficient number, since it is larger than the sum of its proper divisors (1).

109854649 is an equidigital number, since it uses as much as digits as its factorization.

109854649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 109854649 is about 10481.1568540882. The cubic root of 109854649 is about 478.9308509656.

The spelling of 109854649 in words is "one hundred nine million, eight hundred fifty-four thousand, six hundred forty-nine".