38779884 has 192 divisors, whose sum is σ = 123432960. Its totient is φ = 10497600.

The previous prime is 38779883. The next prime is 38780017. The reversal of 38779884 is 48897783.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 38779884.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38779883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1250949 + ... + 1250979.

It is an arithmetic number, because the mean of its divisors is an integer number (642880).

Almost surely, 2^38779884 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38779884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61716480).

38779884 is an abundant number, since it is smaller than the sum of its proper divisors (84653076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38779884 is a wasteful number, since it uses less digits than its factorization.

38779884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80 (or 60 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The square root of 38779884 is about 6227.3496770295. The cubic root of 38779884 is about 338.4819403203.

The spelling of 38779884 in words is "thirty-eight million, seven hundred seventy-nine thousand, eight hundred eighty-four".