38273989 has 4 divisors (see below), whose sum is σ = 41218156. Its totient is φ = 35329824.

The previous prime is 38273929. The next prime is 38273993. The reversal of 38273989 is 98937283.

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 12852225 + 25421764 = 3585^2 + 5042^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38273989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38273929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1472064 + ... + 1472089.

It is an arithmetic number, because the mean of its divisors is an integer number (10304539).

Almost surely, 2^38273989 is an apocalyptic number.

It is an amenable number.

38273989 is a deficient number, since it is larger than the sum of its proper divisors (2944167).

38273989 is a wasteful number, since it uses less digits than its factorization.

38273989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2944166.

The product of its digits is 653184, while the sum is 49.

The square root of 38273989 is about 6186.5975301453. The cubic root of 38273989 is about 337.0036277115.

The spelling of 38273989 in words is "thirty-eight million, two hundred seventy-three thousand, nine hundred eighty-nine".