47692021 has 8 divisors (see below), whose sum is σ = 54382104. Its totient is φ = 41433600.

The previous prime is 47691983. The next prime is 47692039. The reversal of 47692021 is 12029674.

It can be written as a sum of positive squares in 4 ways, for example, as 7623121 + 40068900 = 2761^2 + 6330^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 47692021 - 2¹⁵ = 47659253 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 (47692081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107680 + ... + 108121.

It is an arithmetic number, because the mean of its divisors is an integer number (6797763).

Almost surely, 2^47692021 is an apocalyptic number.

It is an amenable number.

47692021 is a deficient number, since it is larger than the sum of its proper divisors (6690083).

47692021 is a wasteful number, since it uses less digits than its factorization.

47692021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215831.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 47692021 is about 6905.9409930870. The cubic root of 47692021 is about 362.6451794229.

The spelling of 47692021 in words is "forty-seven million, six hundred ninety-two thousand, twenty-one".