47032109 has 4 divisors (see below), whose sum is σ = 47125020. Its totient is φ = 46939200.

The previous prime is 47032103. The next prime is 47032123. The reversal of 47032109 is 90123074.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90123074 = 2 ⋅45061537.

It can be written as a sum of positive squares in 2 ways, for example, as 40386025 + 6646084 = 6355^2 + 2578^2 .

It is a cyclic number.

It is not a de Polignac number, because 47032109 - 2²⁰ = 45983533 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47032103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45692 + ... + 46709.

It is an arithmetic number, because the mean of its divisors is an integer number (11781255).

Almost surely, 2^47032109 is an apocalyptic number.

It is an amenable number.

47032109 is a deficient number, since it is larger than the sum of its proper divisors (92911).

47032109 is an equidigital number, since it uses as much as digits as its factorization.

47032109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92910.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 47032109 is about 6857.9959900834. The cubic root of 47032109 is about 360.9647707224.

The spelling of 47032109 in words is "forty-seven million, thirty-two thousand, one hundred nine".