38939292 has 144 divisors (see below), whose sum is σ = 119857920. Its totient is φ = 10824192.

The previous prime is 38939291. The next prime is 38939293. The reversal of 38939292 is 29293983.

It is an interprime number because it is at equal distance from previous prime (38939291) and next prime (38939293).

It is a super-2 number, since 2×38939292² = 3032536922922528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38939291) 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 47 ways as a sum of consecutive naturals, for example, 401388 + ... + 401484.

Almost surely, 2^38939292 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 38939292, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59928960).

38939292 is an abundant number, since it is smaller than the sum of its proper divisors (80918628).

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

38939292 is a wasteful number, since it uses less digits than its factorization.

38939292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182 (or 168 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 38939292 is about 6240.1355754503. The cubic root of 38939292 is about 338.9450925247.

The spelling of 38939292 in words is "thirty-eight million, nine hundred thirty-nine thousand, two hundred ninety-two".