3949647087 has 4 divisors (see below), whose sum is σ = 5266196120. Its totient is φ = 2633098056.

The previous prime is 3949647049. The next prime is 3949647109. The reversal of 3949647087 is 7807469493.

3949647087 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 3949647087 - 2¹⁹ = 3949122799 is a prime.

It is a super-2 number, since 2×3949647087² = 31199424223695171138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3949647017) 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, 658274512 + ... + 658274517.

It is an arithmetic number, because the mean of its divisors is an integer number (1316549030).

Almost surely, 2^3949647087 is an apocalyptic number.

3949647087 is a deficient number, since it is larger than the sum of its proper divisors (1316549033).

3949647087 is a wasteful number, since it uses less digits than its factorization.

3949647087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316549032.

The product of its (nonzero) digits is 9144576, while the sum is 57.

The square root of 3949647087 is about 62846.2177620897. The cubic root of 3949647087 is about 1580.7120498035.

The spelling of 3949647087 in words is "three billion, nine hundred forty-nine million, six hundred forty-seven thousand, eighty-seven".