47954989 has 2 divisors, whose sum is σ = 47954990. Its totient is φ = 47954988.

The previous prime is 47954987. The next prime is 47954999. The reversal of 47954989 is 98945974.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25704900 + 22250089 = 5070^2 + 4717^2 .

It is a cyclic number.

It is not a de Polignac number, because 47954989 - 2¹ = 47954987 is a prime.

Together with 47954987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47954981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23977494 + 23977495.

It is an arithmetic number, because the mean of its divisors is an integer number (23977495).

Almost surely, 2^47954989 is an apocalyptic number.

It is an amenable number.

47954989 is a deficient number, since it is larger than the sum of its proper divisors (1).

47954989 is an equidigital number, since it uses as much as digits as its factorization.

47954989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 55.

The square root of 47954989 is about 6924.9540792701. The cubic root of 47954989 is about 363.3104852413.

The spelling of 47954989 in words is "forty-seven million, nine hundred fifty-four thousand, nine hundred eighty-nine".