47946399 has 4 divisors (see below), whose sum is σ = 63928536. Its totient is φ = 31964264.

The previous prime is 47946391. The next prime is 47946433. The reversal of 47946399 is 99364974.

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

It is a cyclic number.

It is not a de Polignac number, because 47946399 - 2³ = 47946391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47946391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7991064 + ... + 7991069.

It is an arithmetic number, because the mean of its divisors is an integer number (15982134).

Almost surely, 2^47946399 is an apocalyptic number.

47946399 is a deficient number, since it is larger than the sum of its proper divisors (15982137).

47946399 is a wasteful number, since it uses less digits than its factorization.

47946399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15982136.

The product of its digits is 1469664, while the sum is 51.

The square root of 47946399 is about 6924.3338307739. Note that the first 3 decimals coincide. The cubic root of 47946399 is about 363.2887911243.

The spelling of 47946399 in words is "forty-seven million, nine hundred forty-six thousand, three hundred ninety-nine".