38991046 has 4 divisors (see below), whose sum is σ = 58486572. Its totient is φ = 19495522.

The previous prime is 38991037. The next prime is 38991061. The reversal of 38991046 is 64019983.

38991046 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: 64019983 = 41 ⋅1561463.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 9747760 + ... + 9747763.

It is an arithmetic number, because the mean of its divisors is an integer number (14621643).

Almost surely, 2^38991046 is an apocalyptic number.

38991046 is a deficient number, since it is larger than the sum of its proper divisors (19495526).

38991046 is a wasteful number, since it uses less digits than its factorization.

38991046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19495525.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 38991046 is about 6244.2810635012. The cubic root of 38991046 is about 339.0951894028.

The spelling of 38991046 in words is "thirty-eight million, nine hundred ninety-one thousand, forty-six".