47520989 has 2 divisors, whose sum is σ = 47520990. Its totient is φ = 47520988.

The previous prime is 47520983. The next prime is 47520997. The reversal of 47520989 is 98902574.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40322500 + 7198489 = 6350^2 + 2683^2 .

It is a cyclic number.

It is not a de Polignac number, because 47520989 - 2¹⁶ = 47455453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47520983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23760494 + 23760495.

It is an arithmetic number, because the mean of its divisors is an integer number (23760495).

Almost surely, 2^47520989 is an apocalyptic number.

It is an amenable number.

47520989 is a deficient number, since it is larger than the sum of its proper divisors (1).

47520989 is an equidigital number, since it uses as much as digits as its factorization.

47520989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 47520989 is about 6893.5469099731. The cubic root of 47520989 is about 362.2111569875.

The spelling of 47520989 in words is "forty-seven million, five hundred twenty thousand, nine hundred eighty-nine".