47313649 has 4 divisors (see below), whose sum is σ = 47448036. Its totient is φ = 47179264.

The previous prime is 47313647. The next prime is 47313659. The reversal of 47313649 is 94631374.

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 23107249 + 24206400 = 4807^2 + 4920^2 .

It is a cyclic number.

It is not a de Polignac number, because 47313649 - 2¹ = 47313647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47313641) 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, 66664 + ... + 67369.

It is an arithmetic number, because the mean of its divisors is an integer number (11862009).

Almost surely, 2^47313649 is an apocalyptic number.

It is an amenable number.

47313649 is a deficient number, since it is larger than the sum of its proper divisors (134387).

47313649 is a wasteful number, since it uses less digits than its factorization.

47313649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134386.

The product of its digits is 54432, while the sum is 37.

The square root of 47313649 is about 6878.4917678224. The cubic root of 47313649 is about 361.6835981606.

The spelling of 47313649 in words is "forty-seven million, three hundred thirteen thousand, six hundred forty-nine".