38672947 has 4 divisors (see below), whose sum is σ = 38685456. Its totient is φ = 38660440.

The previous prime is 38672929. The next prime is 38672951. The reversal of 38672947 is 74927683.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 74927683 = 1123 ⋅66721.

It is a cyclic number.

It is not a de Polignac number, because 38672947 - 2¹¹ = 38670899 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38672897 and 38672906.

It is not an unprimeable number, because it can be changed into a prime (38672917) 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, 2133 + ... + 9049.

It is an arithmetic number, because the mean of its divisors is an integer number (9671364).

Almost surely, 2^38672947 is an apocalyptic number.

38672947 is a deficient number, since it is larger than the sum of its proper divisors (12509).

38672947 is an equidigital number, since it uses as much as digits as its factorization.

38672947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12508.

The product of its digits is 508032, while the sum is 46.

The square root of 38672947 is about 6218.7576733621. The cubic root of 38672947 is about 338.1705283079.

The spelling of 38672947 in words is "thirty-eight million, six hundred seventy-two thousand, nine hundred forty-seven".