38447473 has 4 divisors (see below), whose sum is σ = 38463040. Its totient is φ = 38431908.

The previous prime is 38447447. The next prime is 38447491. The reversal of 38447473 is 37474483.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37474483 = 239 ⋅156797.

It is a cyclic number.

It is not a de Polignac number, because 38447473 - 2⁵ = 38447441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38447413) 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, 3165 + ... + 9322.

It is an arithmetic number, because the mean of its divisors is an integer number (9615760).

Almost surely, 2^38447473 is an apocalyptic number.

It is an amenable number.

38447473 is a deficient number, since it is larger than the sum of its proper divisors (15567).

38447473 is a wasteful number, since it uses less digits than its factorization.

38447473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15566.

The product of its digits is 225792, while the sum is 40.

The square root of 38447473 is about 6200.6026320028. The cubic root of 38447473 is about 337.5120376136.

The spelling of 38447473 in words is "thirty-eight million, four hundred forty-seven thousand, four hundred seventy-three".