38949653 has 4 divisors (see below), whose sum is σ = 39035340. Its totient is φ = 38863968.

The previous prime is 38949629. The next prime is 38949679. The reversal of 38949653 is 35694983.

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 28976689 + 9972964 = 5383^2 + 3158^2 .

It is a cyclic number.

It is not a de Polignac number, because 38949653 - 2¹⁰ = 38948629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38949598 and 38949607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38949613) 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, 42158 + ... + 43071.

It is an arithmetic number, because the mean of its divisors is an integer number (9758835).

Almost surely, 2^38949653 is an apocalyptic number.

It is an amenable number.

38949653 is a deficient number, since it is larger than the sum of its proper divisors (85687).

38949653 is an equidigital number, since it uses as much as digits as its factorization.

38949653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85686.

The product of its digits is 699840, while the sum is 47.

The square root of 38949653 is about 6240.9657105291. The cubic root of 38949653 is about 338.9751521251.

The spelling of 38949653 in words is "thirty-eight million, nine hundred forty-nine thousand, six hundred fifty-three".