47194639 has 4 divisors (see below), whose sum is σ = 47214880. Its totient is φ = 47174400.

The previous prime is 47194621. The next prime is 47194661. The reversal of 47194639 is 93649174.

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 47194639 - 2⁹ = 47194127 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47194595 and 47194604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47194619) 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, 6087 + ... + 11464.

It is an arithmetic number, because the mean of its divisors is an integer number (11803720).

Almost surely, 2^47194639 is an apocalyptic number.

47194639 is a deficient number, since it is larger than the sum of its proper divisors (20241).

47194639 is a wasteful number, since it uses less digits than its factorization.

47194639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20240.

The product of its digits is 163296, while the sum is 43.

The square root of 47194639 is about 6869.8354419884. The cubic root of 47194639 is about 361.3800909167.

The spelling of 47194639 in words is "forty-seven million, one hundred ninety-four thousand, six hundred thirty-nine".