47830621 has 6 divisors (see below), whose sum is σ = 48081722. Its totient is φ = 47580720.

The previous prime is 47830597. The next prime is 47830633. The reversal of 47830621 is 12603874.

It can be written as a sum of positive squares in 3 ways, for example, as 27225 + 47803396 = 165^2 + 6914^2 .

It is not a de Polignac number, because 47830621 - 2²⁵ = 14276189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47830661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72031 + ... + 72691.

Almost surely, 2^47830621 is an apocalyptic number.

It is an amenable number.

47830621 is a deficient number, since it is larger than the sum of its proper divisors (251101).

47830621 is an frugal number, since it uses more digits than its factorization.

47830621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1199 (or 930 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 47830621 is about 6915.9685511142. The cubic root of 47830621 is about 362.9961396681.

The spelling of 47830621 in words is "forty-seven million, eight hundred thirty thousand, six hundred twenty-one".