47122409 has 8 divisors (see below), whose sum is σ = 47531328. Its totient is φ = 46715760.

The previous prime is 47122391. The next prime is 47122417. The reversal of 47122409 is 90422174.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47122409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (47122429) 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, 85874 + ... + 86420.

It is an arithmetic number, because the mean of its divisors is an integer number (5941416).

Almost surely, 2^47122409 is an apocalyptic number.

It is an amenable number.

47122409 is a deficient number, since it is larger than the sum of its proper divisors (408919).

47122409 is a wasteful number, since it uses less digits than its factorization.

47122409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 47122409 is about 6864.5763889697. The cubic root of 47122409 is about 361.1956362680.

The spelling of 47122409 in words is "forty-seven million, one hundred twenty-two thousand, four hundred nine".