38447069 has 4 divisors (see below), whose sum is σ = 39772860. Its totient is φ = 37121280.

The previous prime is 38447063. The next prime is 38447093. The reversal of 38447069 is 96074483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96074483 = 131 ⋅733393.

It can be written as a sum of positive squares in 2 ways, for example, as 22686169 + 15760900 = 4763^2 + 3970^2 .

It is a cyclic number.

It is not a de Polignac number, because 38447069 - 2⁸ = 38446813 is a prime.

It is a super-2 number, since 2×38447069² = 2956354229381522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38447063) 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, 662852 + ... + 662909.

It is an arithmetic number, because the mean of its divisors is an integer number (9943215).

Almost surely, 2^38447069 is an apocalyptic number.

It is an amenable number.

38447069 is a deficient number, since it is larger than the sum of its proper divisors (1325791).

38447069 is a wasteful number, since it uses less digits than its factorization.

38447069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325790.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 38447069 is about 6200.5700544385. The cubic root of 38447069 is about 337.5108554350.

The spelling of 38447069 in words is "thirty-eight million, four hundred forty-seven thousand, sixty-nine".