47662921 has 8 divisors (see below), whose sum is σ = 49462920. Its totient is φ = 45873408.

The previous prime is 47662913. The next prime is 47662931. The reversal of 47662921 is 12926674.

It can be written as a sum of positive squares in 4 ways, for example, as 1354896 + 46308025 = 1164^2 + 6805^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 47662921 - 2³ = 47662913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47662931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7335 + ... + 12211.

It is an arithmetic number, because the mean of its divisors is an integer number (6182865).

Almost surely, 2^47662921 is an apocalyptic number.

It is an amenable number.

47662921 is a deficient number, since it is larger than the sum of its proper divisors (1799999).

47662921 is a wasteful number, since it uses less digits than its factorization.

47662921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5243.

The product of its digits is 36288, while the sum is 37.

The square root of 47662921 is about 6903.8337900039. The cubic root of 47662921 is about 362.5714066228.

The spelling of 47662921 in words is "forty-seven million, six hundred sixty-two thousand, nine hundred twenty-one".