38809471 has 4 divisors (see below), whose sum is σ = 38829952. Its totient is φ = 38788992.

The previous prime is 38809469. The next prime is 38809499. The reversal of 38809471 is 17490883.

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 38809471 - 2¹ = 38809469 is a prime.

It is a super-3 number, since 3×38809471³ (a number of 24 digits) contains 333 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 (38809171) 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, 7071 + ... + 11296.

It is an arithmetic number, because the mean of its divisors is an integer number (9707488).

Almost surely, 2^38809471 is an apocalyptic number.

38809471 is a deficient number, since it is larger than the sum of its proper divisors (20481).

38809471 is a wasteful number, since it uses less digits than its factorization.

38809471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20480.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 38809471 is about 6229.7247932794. The cubic root of 38809471 is about 338.5679997092.

The spelling of 38809471 in words is "thirty-eight million, eight hundred nine thousand, four hundred seventy-one".