38420689 has 8 divisors (see below), whose sum is σ = 39684008. Its totient is φ = 37169280.

The previous prime is 38420671. The next prime is 38420719. The reversal of 38420689 is 98602483.

It can be written as a sum of positive squares in 4 ways, for example, as 166464 + 38254225 = 408^2 + 6185^2 .

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 38420689 - 2¹³ = 38412497 is a prime.

It is a super-2 number, since 2×38420689² = 2952298686469442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38424689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3829 + ... + 9565.

It is an arithmetic number, because the mean of its divisors is an integer number (4960501).

Almost surely, 2^38420689 is an apocalyptic number.

It is an amenable number.

38420689 is a deficient number, since it is larger than the sum of its proper divisors (1263319).

38420689 is a wasteful number, since it uses less digits than its factorization.

38420689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5955.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 38420689 is about 6198.4424656522. The cubic root of 38420689 is about 337.4336447509.

The spelling of 38420689 in words is "thirty-eight million, four hundred twenty thousand, six hundred eighty-nine".