39281689093 has 4 divisors (see below), whose sum is σ = 40117469760. Its totient is φ = 38445908428.

The previous prime is 39281689049. The next prime is 39281689103. The reversal of 39281689093 is 39098618293.

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.

It is a cyclic number.

It is not a de Polignac number, because 39281689093 - 2¹³ = 39281680901 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39281689193) 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, 417890263 + ... + 417890356.

It is an arithmetic number, because the mean of its divisors is an integer number (10029367440).

Almost surely, 2^39281689093 is an apocalyptic number.

It is an amenable number.

39281689093 is a deficient number, since it is larger than the sum of its proper divisors (835780667).

39281689093 is an equidigital number, since it uses as much as digits as its factorization.

39281689093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835780666.

The product of its (nonzero) digits is 5038848, while the sum is 58.

The spelling of 39281689093 in words is "thirty-nine billion, two hundred eighty-one million, six hundred eighty-nine thousand, ninety-three".