38220139 has 8 divisors (see below), whose sum is σ = 38700000. Its totient is φ = 37743552.

The previous prime is 38220113. The next prime is 38220151. The reversal of 38220139 is 93102283.

38220139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38220139 - 2⁷ = 38220011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38220109) 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 7 ways as a sum of consecutive naturals, for example, 29007 + ... + 30295.

It is an arithmetic number, because the mean of its divisors is an integer number (4837500).

Almost surely, 2^38220139 is an apocalyptic number.

38220139 is a deficient number, since it is larger than the sum of its proper divisors (479861).

38220139 is a wasteful number, since it uses less digits than its factorization.

38220139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1637.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 38220139 is about 6182.2438483127. The cubic root of 38220139 is about 336.8455032385.

The spelling of 38220139 in words is "thirty-eight million, two hundred twenty thousand, one hundred thirty-nine".