39648093091 has 4 divisors (see below), whose sum is σ = 39648538384. Its totient is φ = 39647647800.

The previous prime is 39648093029. The next prime is 39648093097. The reversal of 39648093091 is 19039084693.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 19039084693 = 23 ⋅827786291.

It is a cyclic number.

It is not a de Polignac number, because 39648093091 - 2⁷ = 39648092963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39648093097) 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, 38100 + ... + 284161.

It is an arithmetic number, because the mean of its divisors is an integer number (9912134596).

Almost surely, 2^39648093091 is an apocalyptic number.

39648093091 is a deficient number, since it is larger than the sum of its proper divisors (445293).

39648093091 is a wasteful number, since it uses less digits than its factorization.

39648093091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445292.

The product of its (nonzero) digits is 1259712, while the sum is 52.

The spelling of 39648093091 in words is "thirty-nine billion, six hundred forty-eight million, ninety-three thousand, ninety-one".