38349709 has 4 divisors (see below), whose sum is σ = 38471004. Its totient is φ = 38228416.

The previous prime is 38349659. The next prime is 38349743. The reversal of 38349709 is 90794383.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90794383 = 139 ⋅653197.

It can be written as a sum of positive squares in 2 ways, for example, as 5745609 + 32604100 = 2397^2 + 5710^2 .

It is a cyclic number.

It is not a de Polignac number, because 38349709 - 2⁹ = 38349197 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 (38349749) 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, 60172 + ... + 60805.

It is an arithmetic number, because the mean of its divisors is an integer number (9617751).

Almost surely, 2^38349709 is an apocalyptic number.

It is an amenable number.

38349709 is a deficient number, since it is larger than the sum of its proper divisors (121295).

38349709 is a wasteful number, since it uses less digits than its factorization.

38349709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121294.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 38349709 is about 6192.7141868489. The cubic root of 38349709 is about 337.2257202770.

The spelling of 38349709 in words is "thirty-eight million, three hundred forty-nine thousand, seven hundred nine".