38943009 has 24 divisors (see below), whose sum is σ = 65382720. Its totient is φ = 21873888.

The previous prime is 38943007. The next prime is 38943011. The reversal of 38943009 is 90034983.

It is an interprime number because it is at equal distance from previous prime (38943007) and next prime (38943011).

It is not a de Polignac number, because 38943009 - 2¹ = 38943007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38943001) 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, 1522 + ... + 8955.

It is an arithmetic number, because the mean of its divisors is an integer number (2724280).

Almost surely, 2^38943009 is an apocalyptic number.

It is an amenable number.

38943009 is a deficient number, since it is larger than the sum of its proper divisors (26439711).

38943009 is a wasteful number, since it uses less digits than its factorization.

38943009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10549 (or 10546 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 38943009 is about 6240.4333984107. The cubic root of 38943009 is about 338.9558769942.

It can be divided in two parts, 3894 and 3009, that added together give a triangular number (6903 = T₁₁₇).

The spelling of 38943009 in words is "thirty-eight million, nine hundred forty-three thousand, nine".