38636869 has 4 divisors (see below), whose sum is σ = 40909644. Its totient is φ = 36364096.

The previous prime is 38636837. The next prime is 38636891. The reversal of 38636869 is 96863683.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22137025 + 16499844 = 4705^2 + 4062^2 .

It is a cyclic number.

It is not a de Polignac number, because 38636869 - 2⁵ = 38636837 is a prime.

It is a super-2 number, since 2×38636869² = 2985615292246322, 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 (38636809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1136362 + ... + 1136395.

It is an arithmetic number, because the mean of its divisors is an integer number (10227411).

Almost surely, 2^38636869 is an apocalyptic number.

It is an amenable number.

38636869 is a deficient number, since it is larger than the sum of its proper divisors (2272775).

38636869 is a wasteful number, since it uses less digits than its factorization.

38636869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2272774.

The product of its digits is 1119744, while the sum is 49.

The square root of 38636869 is about 6215.8562563817. The cubic root of 38636869 is about 338.0653358052.

The spelling of 38636869 in words is "thirty-eight million, six hundred thirty-six thousand, eight hundred sixty-nine".