38849440 has 48 divisors (see below), whose sum is σ = 104896512. Its totient is φ = 13319424.

The previous prime is 38849423. The next prime is 38849443. The reversal of 38849440 is 4494883.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 38849393 and 38849402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38849443) 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, 16224 + ... + 18463.

It is an arithmetic number, because the mean of its divisors is an integer number (2185344).

Almost surely, 2^38849440 is an apocalyptic number.

It is an amenable number.

38849440 is an abundant number, since it is smaller than the sum of its proper divisors (66047072).

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

38849440 is a wasteful number, since it uses less digits than its factorization.

38849440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34709 (or 34701 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 38849440 is about 6232.9318943816. The cubic root of 38849440 is about 338.6841876841.

The spelling of 38849440 in words is "thirty-eight million, eight hundred forty-nine thousand, four hundred forty".