39648893 has 4 divisors (see below), whose sum is σ = 39664128. Its totient is φ = 39633660.

The previous prime is 39648883. The next prime is 39648899. The reversal of 39648893 is 39884693.

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 a de Polignac number, because none of the positive numbers 2^k-39648893 is a prime.

It is a super-2 number, since 2×39648893² = 3144069432250898, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39648899) 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, 2621 + ... + 9282.

It is an arithmetic number, because the mean of its divisors is an integer number (9916032).

Almost surely, 2^39648893 is an apocalyptic number.

It is an amenable number.

39648893 is a deficient number, since it is larger than the sum of its proper divisors (15235).

39648893 is a wasteful number, since it uses less digits than its factorization.

39648893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15234.

The product of its digits is 1119744, while the sum is 50.

The square root of 39648893 is about 6296.7366945109. The cubic root of 39648893 is about 340.9916063327.

The spelling of 39648893 in words is "thirty-nine million, six hundred forty-eight thousand, eight hundred ninety-three".