38878369 has 4 divisors (see below), whose sum is σ = 39041280. Its totient is φ = 38715460.

The previous prime is 38878363. The next prime is 38878387. The reversal of 38878369 is 96387883.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 38878369 - 2¹⁷ = 38747297 is a prime.

It is a super-2 number, since 2×38878369² = 3023055152200322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38878363) 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 3 ways as a sum of consecutive naturals, for example, 81097 + ... + 81574.

It is an arithmetic number, because the mean of its divisors is an integer number (9760320).

Almost surely, 2^38878369 is an apocalyptic number.

It is an amenable number.

38878369 is a deficient number, since it is larger than the sum of its proper divisors (162911).

38878369 is a wasteful number, since it uses less digits than its factorization.

38878369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162910.

The product of its digits is 1741824, while the sum is 52.

The square root of 38878369 is about 6235.2521200028. The cubic root of 38878369 is about 338.7682332020.

The spelling of 38878369 in words is "thirty-eight million, eight hundred seventy-eight thousand, three hundred sixty-nine".