38947005 has 24 divisors (see below), whose sum is σ = 69688320. Its totient is φ = 20100960.

The previous prime is 38946991. The next prime is 38947009. The reversal of 38947005 is 50074983.

It is not a de Polignac number, because 38947005 - 2⁴ = 38946989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38947009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12565 + ... + 15354.

It is an arithmetic number, because the mean of its divisors is an integer number (2903680).

Almost surely, 2^38947005 is an apocalyptic number.

It is an amenable number.

38947005 is a deficient number, since it is larger than the sum of its proper divisors (30741315).

38947005 is a wasteful number, since it uses less digits than its factorization.

38947005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27961 (or 27958 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 38947005 is about 6240.7535602682. The cubic root of 38947005 is about 338.9674701863.

The spelling of 38947005 in words is "thirty-eight million, nine hundred forty-seven thousand, five".