38344729 has 4 divisors (see below), whose sum is σ = 38646784. Its totient is φ = 38042676.

The previous prime is 38344727. The next prime is 38344771. The reversal of 38344729 is 92744383.

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: 92744383 = 73 ⋅1270471.

It is a cyclic number.

It is not a de Polignac number, because 38344729 - 2¹ = 38344727 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38344691 and 38344700.

It is not an unprimeable number, because it can be changed into a prime (38344721) 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, 150837 + ... + 151090.

It is an arithmetic number, because the mean of its divisors is an integer number (9661696).

Almost surely, 2^38344729 is an apocalyptic number.

It is an amenable number.

38344729 is a deficient number, since it is larger than the sum of its proper divisors (302055).

38344729 is a wasteful number, since it uses less digits than its factorization.

38344729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302054.

The product of its digits is 145152, while the sum is 40.

The square root of 38344729 is about 6192.3120883883. The cubic root of 38344729 is about 337.2111225410.

The spelling of 38344729 in words is "thirty-eight million, three hundred forty-four thousand, seven hundred twenty-nine".