47849621 has 4 divisors (see below), whose sum is σ = 49142892. Its totient is φ = 46556352.

The previous prime is 47849603. The next prime is 47849639. The reversal of 47849621 is 12694874.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (47849603) and next prime (47849639).

It can be written as a sum of positive squares in 2 ways, for example, as 43692100 + 4157521 = 6610^2 + 2039^2 .

It is a cyclic number.

It is not a de Polignac number, because 47849621 - 2¹⁴ = 47833237 is a prime.

It is a super-3 number, since 3×47849621³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47849671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 646580 + ... + 646653.

It is an arithmetic number, because the mean of its divisors is an integer number (12285723).

Almost surely, 2^47849621 is an apocalyptic number.

It is an amenable number.

47849621 is a deficient number, since it is larger than the sum of its proper divisors (1293271).

47849621 is a wasteful number, since it uses less digits than its factorization.

47849621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1293270.

The product of its digits is 96768, while the sum is 41.

The square root of 47849621 is about 6917.3420473474. The cubic root of 47849621 is about 363.0441982372.

The spelling of 47849621 in words is "forty-seven million, eight hundred forty-nine thousand, six hundred twenty-one".