109491049 has 2 divisors, whose sum is σ = 109491050. Its totient is φ = 109491048.

The previous prime is 109491013. The next prime is 109491073. The reversal of 109491049 is 940194901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73874025 + 35617024 = 8595^2 + 5968^2 .

It is a cyclic number.

It is not a de Polignac number, because 109491049 - 2¹⁷ = 109359977 is a prime.

It is a super-2 number, since 2×109491049² = 23976579622240802, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 109490999 and 109491017.

It is not a weakly prime, because it can be changed into another prime (109491749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54745524 + 54745525.

It is an arithmetic number, because the mean of its divisors is an integer number (54745525).

Almost surely, 2^109491049 is an apocalyptic number.

It is an amenable number.

109491049 is a deficient number, since it is larger than the sum of its proper divisors (1).

109491049 is an equidigital number, since it uses as much as digits as its factorization.

109491049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 109491049 is about 10463.7970641637. The cubic root of 109491049 is about 478.4018740046.

The spelling of 109491049 in words is "one hundred nine million, four hundred ninety-one thousand, forty-nine".