47418389 has 8 divisors (see below), whose sum is σ = 50706648. Its totient is φ = 44185600.

The previous prime is 47418383. The next prime is 47418401. The reversal of 47418389 is 98381474.

It can be written as a sum of positive squares in 4 ways, for example, as 9102289 + 38316100 = 3017^2 + 6190^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47418389 - 2⁴ = 47418373 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47418383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12092 + ... + 15525.

It is an arithmetic number, because the mean of its divisors is an integer number (6338331).

Almost surely, 2^47418389 is an apocalyptic number.

It is an amenable number.

47418389 is a deficient number, since it is larger than the sum of its proper divisors (3288259).

47418389 is a wasteful number, since it uses less digits than its factorization.

47418389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27735.

The product of its digits is 193536, while the sum is 44.

The square root of 47418389 is about 6886.1011465124. The cubic root of 47418389 is about 361.9502923109.

The spelling of 47418389 in words is "forty-seven million, four hundred eighteen thousand, three hundred eighty-nine".