38820469 has 8 divisors (see below), whose sum is σ = 41226840. Its totient is φ = 36427776.

The previous prime is 38820377. The next prime is 38820493. The reversal of 38820469 is 96402883.

It can be written as a sum of positive squares in 4 ways, for example, as 1768900 + 37051569 = 1330^2 + 6087^2 .

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 38820469 - 2¹⁷ = 38689397 is a prime.

It is a super-2 number, since 2×38820469² = 3014057626759922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38820499) 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, 2767 + ... + 9235.

It is an arithmetic number, because the mean of its divisors is an integer number (5153355).

Almost surely, 2^38820469 is an apocalyptic number.

It is an amenable number.

38820469 is a deficient number, since it is larger than the sum of its proper divisors (2406371).

38820469 is a wasteful number, since it uses less digits than its factorization.

38820469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6839.

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

The square root of 38820469 is about 6230.6074342716. The cubic root of 38820469 is about 338.5999783224.

The spelling of 38820469 in words is "thirty-eight million, eight hundred twenty thousand, four hundred sixty-nine".