47452239 has 6 divisors (see below), whose sum is σ = 68542136. Its totient is φ = 31634820.

The previous prime is 47452217. The next prime is 47452247. The reversal of 47452239 is 93225474.

It is not a de Polignac number, because 47452239 - 2¹¹ = 47450191 is a prime.

It is a super-2 number, since 2×47452239² = 4503429972226242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47452739) 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 5 ways as a sum of consecutive naturals, for example, 2636227 + ... + 2636244.

Almost surely, 2^47452239 is an apocalyptic number.

47452239 is a deficient number, since it is larger than the sum of its proper divisors (21089897).

47452239 is a wasteful number, since it uses less digits than its factorization.

47452239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5272477 (or 5272474 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 47452239 is about 6888.5585574923. The cubic root of 47452239 is about 362.0363988715.

The spelling of 47452239 in words is "forty-seven million, four hundred fifty-two thousand, two hundred thirty-nine".