39397225 has 36 divisors (see below), whose sum is σ = 58841100. Its totient is φ = 26060160.

The previous prime is 39397219. The next prime is 39397231. The reversal of 39397225 is 52279393.

It is a happy number.

39397225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (39397219) and next prime (39397231).

It can be written as a sum of positive squares in 6 ways, for example, as 7722841 + 31674384 = 2779^2 + 5628^2 .

It is not a de Polignac number, because 39397225 - 2³ = 39397217 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 34971 + ... + 36079.

It is an arithmetic number, because the mean of its divisors is an integer number (1634475).

Almost surely, 2^39397225 is an apocalyptic number.

39397225 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

39397225 is a deficient number, since it is larger than the sum of its proper divisors (19443875).

39397225 is a wasteful number, since it uses less digits than its factorization.

39397225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162 (or 1150 counting only the distinct ones).

The product of its digits is 102060, while the sum is 40.

The square root of 39397225 is about 6276.7208795676. The cubic root of 39397225 is about 340.2686026249.

The spelling of 39397225 in words is "thirty-nine million, three hundred ninety-seven thousand, two hundred twenty-five".