38556609 has 16 divisors (see below), whose sum is σ = 63272832. Its totient is φ = 20337408.

The previous prime is 38556593. The next prime is 38556611. The reversal of 38556609 is 90665583.

It is not a de Polignac number, because 38556609 - 2⁴ = 38556593 is a prime.

It is a super-2 number, since 2×38556609² = 2973224195157762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38556619) 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 15 ways as a sum of consecutive naturals, for example, 70344 + ... + 70889.

It is an arithmetic number, because the mean of its divisors is an integer number (3954552).

Almost surely, 2^38556609 is an apocalyptic number.

38556609 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

38556609 is a deficient number, since it is larger than the sum of its proper divisors (24716223).

38556609 is a wasteful number, since it uses less digits than its factorization.

38556609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141256.

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 38556609 is about 6209.3968306108. The cubic root of 38556609 is about 337.8310868951.

The spelling of 38556609 in words is "thirty-eight million, five hundred fifty-six thousand, six hundred nine".