47708897 has 4 divisors (see below), whose sum is σ = 47872020. Its totient is φ = 47545776.

The previous prime is 47708863. The next prime is 47708911. The reversal of 47708897 is 79880774.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79880774 = 2 ⋅39940387.

It can be written as a sum of positive squares in 2 ways, for example, as 45751696 + 1957201 = 6764^2 + 1399^2 .

It is a cyclic number.

It is not a de Polignac number, because 47708897 - 2¹⁸ = 47446753 is a prime.

It is a super-2 number, since 2×47708897² = 4552277705913218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47708827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81122 + ... + 81707.

It is an arithmetic number, because the mean of its divisors is an integer number (11968005).

Almost surely, 2^47708897 is an apocalyptic number.

It is an amenable number.

47708897 is a deficient number, since it is larger than the sum of its proper divisors (163123).

47708897 is a wasteful number, since it uses less digits than its factorization.

47708897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163122.

The product of its (nonzero) digits is 790272, while the sum is 50.

The square root of 47708897 is about 6907.1627315418. The cubic root of 47708897 is about 362.6879488296.

The spelling of 47708897 in words is "forty-seven million, seven hundred eight thousand, eight hundred ninety-seven".