38399225 has 6 divisors (see below), whose sum is σ = 47615070. Its totient is φ = 30719360.

The previous prime is 38399201. The next prime is 38399227. The reversal of 38399225 is 52299383.

It can be written as a sum of positive squares in 3 ways, for example, as 8543929 + 29855296 = 2923^2 + 5464^2 .

It is not a de Polignac number, because 38399225 - 2¹⁶ = 38333689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38399227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 767960 + ... + 768009.

It is an arithmetic number, because the mean of its divisors is an integer number (7935845).

Almost surely, 2^38399225 is an apocalyptic number.

It is an amenable number.

38399225 is a deficient number, since it is larger than the sum of its proper divisors (9215845).

38399225 is a wasteful number, since it uses less digits than its factorization.

38399225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1535979 (or 1535974 counting only the distinct ones).

The product of its digits is 116640, while the sum is 41.

The square root of 38399225 is about 6196.7108210727. The cubic root of 38399225 is about 337.3707964516.

The spelling of 38399225 in words is "thirty-eight million, three hundred ninety-nine thousand, two hundred twenty-five".