38439625 has 32 divisors (see below), whose sum is σ = 55351296. Its totient is φ = 26107200.

The previous prime is 38439623. The next prime is 38439631. The reversal of 38439625 is 52693483.

It is not a de Polignac number, because 38439625 - 2¹ = 38439623 is a prime.

Its product of digits (155520) is a multiple of the sum of its prime divisors (432).

It is not an unprimeable number, because it can be changed into a prime (38439623) 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 31 ways as a sum of consecutive naturals, for example, 172264 + ... + 172486.

It is an arithmetic number, because the mean of its divisors is an integer number (1729728).

Almost surely, 2^38439625 is an apocalyptic number.

38439625 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

38439625 is a deficient number, since it is larger than the sum of its proper divisors (16911671).

38439625 is a wasteful number, since it uses less digits than its factorization.

38439625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442 (or 432 counting only the distinct ones).

The product of its digits is 155520, while the sum is 40.

The square root of 38439625 is about 6199.9697579908. The cubic root of 38439625 is about 337.4890714340.

The spelling of 38439625 in words is "thirty-eight million, four hundred thirty-nine thousand, six hundred twenty-five".