103005409 has 8 divisors (see below), whose sum is σ = 112449512. Its totient is φ = 93778560.

The previous prime is 103005391. The next prime is 103005437. The reversal of 103005409 is 904500301.

It can be written as a sum of positive squares in 4 ways, for example, as 20250000 + 82755409 = 4500^2 + 9097^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 103005409 - 2¹³ = 102997217 is a prime.

It is a super-2 number, since 2×103005409² = 21220228566514562, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 103005409.

It is not an unprimeable number, because it can be changed into a prime (103005439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53322 + ... + 55219.

It is an arithmetic number, because the mean of its divisors is an integer number (14056189).

Almost surely, 2^103005409 is an apocalyptic number.

It is an amenable number.

103005409 is a deficient number, since it is larger than the sum of its proper divisors (9444103).

103005409 is a wasteful number, since it uses less digits than its factorization.

103005409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108627.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 103005409 is about 10149.1580438970. The cubic root of 103005409 is about 468.7630201065.

The spelling of 103005409 in words is "one hundred three million, five thousand, four hundred nine".