103619409 has 4 divisors (see below), whose sum is σ = 138159216. Its totient is φ = 69079604.

The previous prime is 103619401. The next prime is 103619413. The reversal of 103619409 is 904916301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 103619409 - 2³ = 103619401 is a prime.

It is a super-3 number, since 3×103619409³ (a number of 25 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 103619409.

It is not an unprimeable number, because it can be changed into a prime (103619401) 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 in 3 ways as a sum of consecutive naturals, for example, 17269899 + ... + 17269904.

It is an arithmetic number, because the mean of its divisors is an integer number (34539804).

Almost surely, 2^103619409 is an apocalyptic number.

It is an amenable number.

103619409 is a deficient number, since it is larger than the sum of its proper divisors (34539807).

103619409 is an equidigital number, since it uses as much as digits as its factorization.

103619409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34539806.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 103619409 is about 10179.3619151693. The cubic root of 103619409 is about 469.6925845451.

The spelling of 103619409 in words is "one hundred three million, six hundred nineteen thousand, four hundred nine".