38946487 has 4 divisors (see below), whose sum is σ = 39585016. Its totient is φ = 38307960.

The previous prime is 38946437. The next prime is 38946493. The reversal of 38946487 is 78464983.

38946487 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.

It is a cyclic number.

It is not a de Polignac number, because 38946487 - 2⁷ = 38946359 is a prime.

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 38946487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38946437) 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, 319173 + ... + 319294.

It is an arithmetic number, because the mean of its divisors is an integer number (9896254).

Almost surely, 2^38946487 is an apocalyptic number.

38946487 is a deficient number, since it is larger than the sum of its proper divisors (638529).

38946487 is an equidigital number, since it uses as much as digits as its factorization.

38946487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638528.

The product of its digits is 1161216, while the sum is 49.

The square root of 38946487 is about 6240.7120587318. The cubic root of 38946487 is about 338.9659674099.

The spelling of 38946487 in words is "thirty-eight million, nine hundred forty-six thousand, four hundred eighty-seven".