39009197 has 4 divisors (see below), whose sum is σ = 39021696. Its totient is φ = 38996700.

The previous prime is 39009181. The next prime is 39009221. The reversal of 39009197 is 79190093.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 39009197 - 2⁴ = 39009181 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 39009197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39009497) 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, 2822 + ... + 9272.

It is an arithmetic number, because the mean of its divisors is an integer number (9755424).

Almost surely, 2^39009197 is an apocalyptic number.

It is an amenable number.

39009197 is a deficient number, since it is larger than the sum of its proper divisors (12499).

39009197 is an equidigital number, since it uses as much as digits as its factorization.

39009197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12498.

The product of its (nonzero) digits is 15309, while the sum is 38.

The square root of 39009197 is about 6245.7343043072. The cubic root of 39009197 is about 339.1477994470.

The spelling of 39009197 in words is "thirty-nine million, nine thousand, one hundred ninety-seven".