47440609 has 8 divisors (see below), whose sum is σ = 48133800. Its totient is φ = 46752000.

The previous prime is 47440577. The next prime is 47440619. The reversal of 47440609 is 90604474.

47440609 is nontrivially palindromic in base 15.

It can be written as a sum of positive squares in 4 ways, for example, as 32809984 + 14630625 = 5728^2 + 3825^2 .

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 47440609 - 2⁵ = 47440577 is a prime.

It is a super-2 number, since 2×47440609² = 4501222764581762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47440619) 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, 23367 + ... + 25315.

It is an arithmetic number, because the mean of its divisors is an integer number (6016725).

Almost surely, 2^47440609 is an apocalyptic number.

It is an amenable number.

47440609 is a deficient number, since it is larger than the sum of its proper divisors (693191).

47440609 is a wasteful number, since it uses less digits than its factorization.

47440609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2291.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 47440609 is about 6887.7143523813. The cubic root of 47440609 is about 362.0068194639.

The spelling of 47440609 in words is "forty-seven million, four hundred forty thousand, six hundred nine".