47194489 has 2 divisors, whose sum is σ = 47194490. Its totient is φ = 47194488.

The previous prime is 47194487. The next prime is 47194501. The reversal of 47194489 is 98449174.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39904489 + 7290000 = 6317^2 + 2700^2 .

It is a cyclic number.

It is not a de Polignac number, because 47194489 - 2¹ = 47194487 is a prime.

It is a super-2 number, since 2×47194489² = 4454639583942242, which contains 22 as substring.

Together with 47194487, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (47194487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23597244 + 23597245.

It is an arithmetic number, because the mean of its divisors is an integer number (23597245).

Almost surely, 2^47194489 is an apocalyptic number.

It is an amenable number.

47194489 is a deficient number, since it is larger than the sum of its proper divisors (1).

47194489 is an equidigital number, since it uses as much as digits as its factorization.

47194489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 46.

The square root of 47194489 is about 6869.8245246877. The cubic root of 47194489 is about 361.3797080549.

The spelling of 47194489 in words is "forty-seven million, one hundred ninety-four thousand, four hundred eighty-nine".