38994231 has 4 divisors (see below), whose sum is σ = 51992312. Its totient is φ = 25996152.

The previous prime is 38994229. The next prime is 38994257. The reversal of 38994231 is 13249983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13249983 = 3 ⋅4416661.

It is not a de Polignac number, because 38994231 - 2¹ = 38994229 is a prime.

It is a super-2 number, since 2×38994231² = 3041100102562722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38994231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38994211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6499036 + ... + 6499041.

It is an arithmetic number, because the mean of its divisors is an integer number (12998078).

Almost surely, 2^38994231 is an apocalyptic number.

38994231 is a deficient number, since it is larger than the sum of its proper divisors (12998081).

38994231 is a wasteful number, since it uses less digits than its factorization.

38994231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12998080.

The product of its digits is 46656, while the sum is 39.

The square root of 38994231 is about 6244.5360916564. The cubic root of 38994231 is about 339.1044221958.

The spelling of 38994231 in words is "thirty-eight million, nine hundred ninety-four thousand, two hundred thirty-one".