47438649 has 48 divisors (see below), whose sum is σ = 77053440. Its totient is φ = 28810080.

The previous prime is 47438641. The next prime is 47438659. The reversal of 47438649 is 94683474.

It is not a de Polignac number, because 47438649 - 2³ = 47438641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47438641) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 302079 + ... + 302235.

It is an arithmetic number, because the mean of its divisors is an integer number (1605280).

Almost surely, 2^47438649 is an apocalyptic number.

It is an amenable number.

47438649 is a deficient number, since it is larger than the sum of its proper divisors (29614791).

47438649 is a wasteful number, since it uses less digits than its factorization.

47438649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235 (or 210 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 47438649 is about 6887.5720685885. The cubic root of 47438649 is about 362.0018339803.

The spelling of 47438649 in words is "forty-seven million, four hundred thirty-eight thousand, six hundred forty-nine".