47299409 has 4 divisors (see below), whose sum is σ = 47324340. Its totient is φ = 47274480.

The previous prime is 47299403. The next prime is 47299429. The reversal of 47299409 is 90499274.

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 27300625 + 19998784 = 5225^2 + 4472^2 .

It is a cyclic number.

It is not a de Polignac number, because 47299409 - 2⁴ = 47299393 is a prime.

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 47299409.

It is not an unprimeable number, because it can be changed into a prime (47299403) 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, 9362 + ... + 13499.

It is an arithmetic number, because the mean of its divisors is an integer number (11831085).

Almost surely, 2^47299409 is an apocalyptic number.

It is an amenable number.

47299409 is a deficient number, since it is larger than the sum of its proper divisors (24931).

47299409 is a wasteful number, since it uses less digits than its factorization.

47299409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24930.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 47299409 is about 6877.4565792886. The cubic root of 47299409 is about 361.6473091874.

The spelling of 47299409 in words is "forty-seven million, two hundred ninety-nine thousand, four hundred nine".