47368921 has 2 divisors, whose sum is σ = 47368922. Its totient is φ = 47368920.

The previous prime is 47368913. The next prime is 47368931. The reversal of 47368921 is 12986374.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45225625 + 2143296 = 6725^2 + 1464^2 .

It is a cyclic number.

It is not a de Polignac number, because 47368921 - 2³ = 47368913 is a prime.

It is not a weakly prime, because it can be changed into another prime (47368931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23684460 + 23684461.

It is an arithmetic number, because the mean of its divisors is an integer number (23684461).

Almost surely, 2^47368921 is an apocalyptic number.

It is an amenable number.

47368921 is a deficient number, since it is larger than the sum of its proper divisors (1).

47368921 is an equidigital number, since it uses as much as digits as its factorization.

47368921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 40.

The square root of 47368921 is about 6882.5083363553. The cubic root of 47368921 is about 361.8243834435.

The spelling of 47368921 in words is "forty-seven million, three hundred sixty-eight thousand, nine hundred twenty-one".