3891852949 has 4 divisors (see below), whose sum is σ = 3892108960. Its totient is φ = 3891596940.

The previous prime is 3891852947. The next prime is 3891852967. The reversal of 3891852949 is 9492581983.

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 3891852949 - 2¹ = 3891852947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3891852893 and 3891852902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3891852947) 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, 103659 + ... + 136120.

It is an arithmetic number, because the mean of its divisors is an integer number (973027240).

Almost surely, 2^3891852949 is an apocalyptic number.

It is an amenable number.

3891852949 is a deficient number, since it is larger than the sum of its proper divisors (256011).

3891852949 is a wasteful number, since it uses less digits than its factorization.

3891852949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256010.

The product of its digits is 5598720, while the sum is 58.

The square root of 3891852949 is about 62384.7172711394. The cubic root of 3891852949 is about 1572.9640880301.

The spelling of 3891852949 in words is "three billion, eight hundred ninety-one million, eight hundred fifty-two thousand, nine hundred forty-nine".