38909463 has 4 divisors (see below), whose sum is σ = 51879288. Its totient is φ = 25939640.

The previous prime is 38909461. The next prime is 38909477. The reversal of 38909463 is 36490983.

38909463 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: 36490983 = 3 ⋅12163661.

It is a cyclic number.

It is not a de Polignac number, because 38909463 - 2¹ = 38909461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38909461) 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, 6484908 + ... + 6484913.

It is an arithmetic number, because the mean of its divisors is an integer number (12969822).

Almost surely, 2^38909463 is an apocalyptic number.

38909463 is a deficient number, since it is larger than the sum of its proper divisors (12969825).

38909463 is a wasteful number, since it uses less digits than its factorization.

38909463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12969824.

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 38909463 is about 6237.7450252475. The cubic root of 38909463 is about 338.8585220762.

The spelling of 38909463 in words is "thirty-eight million, nine hundred nine thousand, four hundred sixty-three".