47449418 has 4 divisors (see below), whose sum is σ = 71174130. Its totient is φ = 23724708.

The previous prime is 47449373. The next prime is 47449421. The reversal of 47449418 is 81494474.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 46963609 + 485809 = 6853^2 + 697^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11862353 + ... + 11862356.

Almost surely, 2^47449418 is an apocalyptic number.

47449418 is a deficient number, since it is larger than the sum of its proper divisors (23724712).

47449418 is a wasteful number, since it uses less digits than its factorization.

47449418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23724711.

The product of its digits is 129024, while the sum is 41.

The square root of 47449418 is about 6888.3537946305. The cubic root of 47449418 is about 362.0292244652.

The spelling of 47449418 in words is "forty-seven million, four hundred forty-nine thousand, four hundred eighteen".