47266639 has 4 divisors (see below), whose sum is σ = 54019024. Its totient is φ = 40514256.

The previous prime is 47266627. The next prime is 47266663. The reversal of 47266639 is 93666274.

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 47266639 - 2¹³ = 47258447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47266595 and 47266604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47266339) 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, 3376182 + ... + 3376195.

It is an arithmetic number, because the mean of its divisors is an integer number (13504756).

Almost surely, 2^47266639 is an apocalyptic number.

47266639 is a deficient number, since it is larger than the sum of its proper divisors (6752385).

47266639 is an equidigital number, since it uses as much as digits as its factorization.

47266639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6752384.

The product of its digits is 326592, while the sum is 43.

The square root of 47266639 is about 6875.0737450590. The cubic root of 47266639 is about 361.5637710027.

The spelling of 47266639 in words is "forty-seven million, two hundred sixty-six thousand, six hundred thirty-nine".