47396897 has 4 divisors (see below), whose sum is σ = 47418756. Its totient is φ = 47375040.

The previous prime is 47396857. The next prime is 47396903. The reversal of 47396897 is 79869374.

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 1577536 + 45819361 = 1256^2 + 6769^2 .

It is a cyclic number.

It is not a de Polignac number, because 47396897 - 2⁸ = 47396641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47396837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7268 + ... + 12149.

It is an arithmetic number, because the mean of its divisors is an integer number (11854689).

Almost surely, 2^47396897 is an apocalyptic number.

It is an amenable number.

47396897 is a deficient number, since it is larger than the sum of its proper divisors (21859).

47396897 is a wasteful number, since it uses less digits than its factorization.

47396897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21858.

The product of its digits is 2286144, while the sum is 53.

The square root of 47396897 is about 6884.5404349165. The cubic root of 47396897 is about 361.8956003696.

The spelling of 47396897 in words is "forty-seven million, three hundred ninety-six thousand, eight hundred ninety-seven".