47215394 has 8 divisors (see below), whose sum is σ = 70960080. Its totient is φ = 23562036.

The previous prime is 47215309. The next prime is 47215397. The reversal of 47215394 is 49351274.

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

It is not an unprimeable number, because it can be changed into a prime (47215397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21524 + ... + 23615.

It is an arithmetic number, because the mean of its divisors is an integer number (8870010).

Almost surely, 2^47215394 is an apocalyptic number.

47215394 is a deficient number, since it is larger than the sum of its proper divisors (23744686).

47215394 is a wasteful number, since it uses less digits than its factorization.

47215394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45664.

The product of its digits is 30240, while the sum is 35.

The square root of 47215394 is about 6871.3458652581. The cubic root of 47215394 is about 361.4330584056.

The spelling of 47215394 in words is "forty-seven million, two hundred fifteen thousand, three hundred ninety-four".