47863649 has 2 divisors, whose sum is σ = 47863650. Its totient is φ = 47863648.

The previous prime is 47863643. The next prime is 47863709. The reversal of 47863649 is 94636874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47541025 + 322624 = 6895^2 + 568^2 .

It is a cyclic number.

It is not a de Polignac number, because 47863649 - 2²⁰ = 46815073 is a prime.

It is not a weakly prime, because it can be changed into another prime (47863643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23931824 + 23931825.

It is an arithmetic number, because the mean of its divisors is an integer number (23931825).

Almost surely, 2^47863649 is an apocalyptic number.

It is an amenable number.

47863649 is a deficient number, since it is larger than the sum of its proper divisors (1).

47863649 is an equidigital number, since it uses as much as digits as its factorization.

47863649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 47.

The square root of 47863649 is about 6918.3559463214. The cubic root of 47863649 is about 363.0796724744.

The spelling of 47863649 in words is "forty-seven million, eight hundred sixty-three thousand, six hundred forty-nine".