47244409 has 4 divisors (see below), whose sum is σ = 47534416. Its totient is φ = 46954404.

The previous prime is 47244389. The next prime is 47244419. The reversal of 47244409 is 90444274.

47244409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 90444274 = 2 ⋅45222137.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47244409 is a prime.

It is a super-3 number, since 3×47244409³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47244419) 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, 144759 + ... + 145084.

It is an arithmetic number, because the mean of its divisors is an integer number (11883604).

Almost surely, 2^47244409 is an apocalyptic number.

It is an amenable number.

47244409 is a deficient number, since it is larger than the sum of its proper divisors (290007).

47244409 is a wasteful number, since it uses less digits than its factorization.

47244409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290006.

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 47244409 is about 6873.4568449944. The cubic root of 47244409 is about 361.5070796930.

The spelling of 47244409 in words is "forty-seven million, two hundred forty-four thousand, four hundred nine".