47239667 has 4 divisors (see below), whose sum is σ = 48391896. Its totient is φ = 46087440.

The previous prime is 47239663. The next prime is 47239669. The reversal of 47239667 is 76693274.

It is a happy number.

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 47239667 - 2² = 47239663 is a prime.

It is a super-2 number, since 2×47239667² = 4463172276541778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47239663) 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, 576053 + ... + 576134.

It is an arithmetic number, because the mean of its divisors is an integer number (12097974).

Almost surely, 2^47239667 is an apocalyptic number.

47239667 is a deficient number, since it is larger than the sum of its proper divisors (1152229).

47239667 is a wasteful number, since it uses less digits than its factorization.

47239667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152228.

The product of its digits is 381024, while the sum is 44.

The square root of 47239667 is about 6873.1118861837. Note that the first 3 decimals coincide. The cubic root of 47239667 is about 361.4949842658.

The spelling of 47239667 in words is "forty-seven million, two hundred thirty-nine thousand, six hundred sixty-seven".