47773897 has 4 divisors (see below), whose sum is σ = 48939156. Its totient is φ = 46608640.

The previous prime is 47773889. The next prime is 47773939. The reversal of 47773897 is 79837774.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79837774 = 2 ⋅39918887.

It can be written as a sum of positive squares in 2 ways, for example, as 11485321 + 36288576 = 3389^2 + 6024^2 .

It is a cyclic number.

It is not a de Polignac number, because 47773897 - 2³ = 47773889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47773807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 582568 + ... + 582649.

It is an arithmetic number, because the mean of its divisors is an integer number (12234789).

Almost surely, 2^47773897 is an apocalyptic number.

It is an amenable number.

47773897 is a deficient number, since it is larger than the sum of its proper divisors (1165259).

47773897 is a wasteful number, since it uses less digits than its factorization.

47773897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1165258.

The product of its digits is 2074464, while the sum is 52.

The square root of 47773897 is about 6911.8663904911. The cubic root of 47773897 is about 362.8525863149.

The spelling of 47773897 in words is "forty-seven million, seven hundred seventy-three thousand, eight hundred ninety-seven".