47018449 has 3 divisors (see below), whose sum is σ = 47025307. Its totient is φ = 47011592.

The previous prime is 47018443. The next prime is 47018507. The reversal of 47018449 is 94481074.

The square root of 47018449 is 6857.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 94481074 = 2 ⋅47240537.

It can be written as a sum of positive squares in only one way, i.e., 342225 + 46676224 = 585^2 + 6832^2 .

It is a de Polignac number, because none of the positive numbers 2^k-47018449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47018443) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3429 + ... + 10285.

Almost surely, 2^47018449 is an apocalyptic number.

47018449 is the 6857-th square number.

47018449 is the 3429-th centered octagonal number.

It is an amenable number.

47018449 is a deficient number, since it is larger than the sum of its proper divisors (6858).

47018449 is an frugal number, since it uses more digits than its factorization.

47018449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13714 (or 6857 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The cubic root of 47018449 is about 360.9298211506.

The spelling of 47018449 in words is "forty-seven million, eighteen thousand, four hundred forty-nine".