47144609 has 4 divisors (see below), whose sum is σ = 47171604. Its totient is φ = 47117616.

The previous prime is 47144597. The next prime is 47144651. The reversal of 47144609 is 90644174.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28654609 + 18490000 = 5353^2 + 4300^2 .

It is a cyclic number.

It is not a de Polignac number, because 47144609 - 2¹⁶ = 47079073 is a prime.

It is a super-2 number, since 2×47144609² = 4445228315525762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47144659) 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, 10682 + ... + 14435.

It is an arithmetic number, because the mean of its divisors is an integer number (11792901).

Almost surely, 2^47144609 is an apocalyptic number.

It is an amenable number.

47144609 is a deficient number, since it is larger than the sum of its proper divisors (26995).

47144609 is a wasteful number, since it uses less digits than its factorization.

47144609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26994.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 47144609 is about 6866.1931956507. The cubic root of 47144609 is about 361.2523487353.

The spelling of 47144609 in words is "forty-seven million, one hundred forty-four thousand, six hundred nine".