47813489 has 8 divisors (see below), whose sum is σ = 49598760. Its totient is φ = 46037376.

The previous prime is 47813471. The next prime is 47813533. The reversal of 47813489 is 98431874.

It can be written as a sum of positive squares in 4 ways, for example, as 1123600 + 46689889 = 1060^2 + 6833^2 .

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 47813489 - 2¹² = 47809393 is a prime.

It is a super-2 number, since 2×47813489² = 4572259460706242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47813449) 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, 9437 + ... + 13589.

It is an arithmetic number, because the mean of its divisors is an integer number (6199845).

Almost surely, 2^47813489 is an apocalyptic number.

It is an amenable number.

47813489 is a deficient number, since it is larger than the sum of its proper divisors (1785271).

47813489 is a wasteful number, since it uses less digits than its factorization.

47813489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4579.

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

The square root of 47813489 is about 6914.7298573408. The cubic root of 47813489 is about 362.9527951022.

The spelling of 47813489 in words is "forty-seven million, eight hundred thirteen thousand, four hundred eighty-nine".