39536993 has 4 divisors (see below), whose sum is σ = 40283028. Its totient is φ = 38790960.

The previous prime is 39536971. The next prime is 39536999. The reversal of 39536993 is 39963593.

It is a happy number.

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 34023889 + 5513104 = 5833^2 + 2348^2 .

It is a cyclic number.

It is not a de Polignac number, because 39536993 - 2¹⁴ = 39520609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39536999) 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, 372938 + ... + 373043.

It is an arithmetic number, because the mean of its divisors is an integer number (10070757).

Almost surely, 2^39536993 is an apocalyptic number.

It is an amenable number.

39536993 is a deficient number, since it is larger than the sum of its proper divisors (746035).

39536993 is an equidigital number, since it uses as much as digits as its factorization.

39536993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746034.

The product of its digits is 590490, while the sum is 47.

The square root of 39536993 is about 6287.8448613177. The cubic root of 39536993 is about 340.6705136052.

The spelling of 39536993 in words is "thirty-nine million, five hundred thirty-six thousand, nine hundred ninety-three".