47418869 has 4 divisors (see below), whose sum is σ = 47862144. Its totient is φ = 46975596.

The previous prime is 47418863. The next prime is 47418929. The reversal of 47418869 is 96881474.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47418869 - 2⁴ = 47418853 is a prime.

It is a super-2 number, since 2×47418869² = 4497098274478322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47418863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221477 + ... + 221690.

It is an arithmetic number, because the mean of its divisors is an integer number (11965536).

Almost surely, 2^47418869 is an apocalyptic number.

It is an amenable number.

47418869 is a deficient number, since it is larger than the sum of its proper divisors (443275).

47418869 is a wasteful number, since it uses less digits than its factorization.

47418869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443274.

The product of its digits is 387072, while the sum is 47.

The square root of 47418869 is about 6886.1359992379. The cubic root of 47418869 is about 361.9515136061.

The spelling of 47418869 in words is "forty-seven million, four hundred eighteen thousand, eight hundred sixty-nine".