47069509 has 4 divisors (see below), whose sum is σ = 47205504. Its totient is φ = 46933516.

The previous prime is 47069507. The next prime is 47069531. The reversal of 47069509 is 90596074.

47069509 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.

It is a cyclic number.

It is not a de Polignac number, because 47069509 - 2¹ = 47069507 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47069507) 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, 67477 + ... + 68170.

It is an arithmetic number, because the mean of its divisors is an integer number (11801376).

Almost surely, 2^47069509 is an apocalyptic number.

It is an amenable number.

47069509 is a deficient number, since it is larger than the sum of its proper divisors (135995).

47069509 is a wasteful number, since it uses less digits than its factorization.

47069509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135994.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 47069509 is about 6860.7221923060. The cubic root of 47069509 is about 361.0604252717.

The spelling of 47069509 in words is "forty-seven million, sixty-nine thousand, five hundred nine".