38438331 has 4 divisors (see below), whose sum is σ = 51251112. Its totient is φ = 25625552.

The previous prime is 38438321. The next prime is 38438333. The reversal of 38438331 is 13383483.

38438331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13383483 = 3 ⋅4461161.

It is a cyclic number.

It is not a de Polignac number, because 38438331 - 2⁷ = 38438203 is a prime.

It is a super-2 number, since 2×38438331² = 2955010580131122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 38438292 and 38438301.

It is not an unprimeable number, because it can be changed into a prime (38438333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6406386 + ... + 6406391.

It is an arithmetic number, because the mean of its divisors is an integer number (12812778).

Almost surely, 2^38438331 is an apocalyptic number.

38438331 is a deficient number, since it is larger than the sum of its proper divisors (12812781).

38438331 is a wasteful number, since it uses less digits than its factorization.

38438331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12812780.

The product of its digits is 20736, while the sum is 33.

The square root of 38438331 is about 6199.8654017648. The cubic root of 38438331 is about 337.4852844064.

The spelling of 38438331 in words is "thirty-eight million, four hundred thirty-eight thousand, three hundred thirty-one".