109405619 has 2 divisors, whose sum is σ = 109405620. Its totient is φ = 109405618.

The previous prime is 109405577. The next prime is 109405651. The reversal of 109405619 is 916504901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 109405619 - 2¹⁶ = 109340083 is a prime.

It is a super-2 number, since 2×109405619² = 23939178937546322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (109405019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54702809 + 54702810.

It is an arithmetic number, because the mean of its divisors is an integer number (54702810).

Almost surely, 2^109405619 is an apocalyptic number.

109405619 is a deficient number, since it is larger than the sum of its proper divisors (1).

109405619 is an equidigital number, since it uses as much as digits as its factorization.

109405619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 109405619 is about 10459.7140974312. The cubic root of 109405619 is about 478.2774178455.

The spelling of 109405619 in words is "one hundred nine million, four hundred five thousand, six hundred nineteen".