47069921 has 2 divisors, whose sum is σ = 47069922. Its totient is φ = 47069920.

The previous prime is 47069917. The next prime is 47069933. The reversal of 47069921 is 12996074.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46240000 + 829921 = 6800^2 + 911^2 .

It is a cyclic number.

It is not a de Polignac number, because 47069921 - 2² = 47069917 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47069221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23534960 + 23534961.

It is an arithmetic number, because the mean of its divisors is an integer number (23534961).

Almost surely, 2^47069921 is an apocalyptic number.

It is an amenable number.

47069921 is a deficient number, since it is larger than the sum of its proper divisors (1).

47069921 is an equidigital number, since it uses as much as digits as its factorization.

47069921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 47069921 is about 6860.7522182338. The cubic root of 47069921 is about 361.0614787241.

The spelling of 47069921 in words is "forty-seven million, sixty-nine thousand, nine hundred twenty-one".