47391697 has 4 divisors (see below), whose sum is σ = 47499120. Its totient is φ = 47284276.

The previous prime is 47391689. The next prime is 47391727. The reversal of 47391697 is 79619374.

47391697 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 47391697 - 2³ = 47391689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47391607) 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, 53047 + ... + 53932.

It is an arithmetic number, because the mean of its divisors is an integer number (11874780).

Almost surely, 2^47391697 is an apocalyptic number.

It is an amenable number.

47391697 is a deficient number, since it is larger than the sum of its proper divisors (107423).

47391697 is a wasteful number, since it uses less digits than its factorization.

47391697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107422.

The product of its digits is 285768, while the sum is 46.

The square root of 47391697 is about 6884.1627668149. The cubic root of 47391697 is about 361.8823651435.

The spelling of 47391697 in words is "forty-seven million, three hundred ninety-one thousand, six hundred ninety-seven".