38948909 has 12 divisors (see below), whose sum is σ = 40452384. Its totient is φ = 37491432.

The previous prime is 38948891. The next prime is 38948939. The reversal of 38948909 is 90984983.

It is a de Polignac number, because none of the positive numbers 2^k-38948909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38948939) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 233144 + ... + 233310.

It is an arithmetic number, because the mean of its divisors is an integer number (3371032).

Almost surely, 2^38948909 is an apocalyptic number.

It is an amenable number.

38948909 is a deficient number, since it is larger than the sum of its proper divisors (1503475).

38948909 is an equidigital number, since it uses as much as digits as its factorization.

38948909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352 (or 293 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 50.

The square root of 38948909 is about 6240.9061040846. The cubic root of 38948909 is about 338.9729937908.

The spelling of 38948909 in words is "thirty-eight million, nine hundred forty-eight thousand, nine hundred nine".