38969309 has 4 divisors (see below), whose sum is σ = 39875616. Its totient is φ = 38063004.

The previous prime is 38969303. The next prime is 38969327. The reversal of 38969309 is 90396983.

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: 90396983 = 5801 ⋅15583.

It is a cyclic number.

It is not a de Polignac number, because 38969309 - 2⁸ = 38969053 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 (38969303) 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, 453089 + ... + 453174.

It is an arithmetic number, because the mean of its divisors is an integer number (9968904).

Almost surely, 2^38969309 is an apocalyptic number.

It is an amenable number.

38969309 is a deficient number, since it is larger than the sum of its proper divisors (906307).

38969309 is an equidigital number, since it uses as much as digits as its factorization.

38969309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906306.

The product of its (nonzero) digits is 314928, while the sum is 47.

The square root of 38969309 is about 6242.5402681921. The cubic root of 38969309 is about 339.0321639731.

The spelling of 38969309 in words is "thirty-eight million, nine hundred sixty-nine thousand, three hundred nine".