3925868829 has 4 divisors (see below), whose sum is σ = 5234491776. Its totient is φ = 2617245884.

The previous prime is 3925868813. The next prime is 3925868833. The reversal of 3925868829 is 9288685293.

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 3925868829 - 2⁴ = 3925868813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3925868729) 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, 654311469 + ... + 654311474.

It is an arithmetic number, because the mean of its divisors is an integer number (1308622944).

Almost surely, 2^3925868829 is an apocalyptic number.

It is an amenable number.

3925868829 is a deficient number, since it is larger than the sum of its proper divisors (1308622947).

3925868829 is a wasteful number, since it uses less digits than its factorization.

3925868829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308622946.

The product of its digits is 14929920, while the sum is 60.

The square root of 3925868829 is about 62656.7540573241. The cubic root of 3925868829 is about 1577.5335159976.

The spelling of 3925868829 in words is "three billion, nine hundred twenty-five million, eight hundred sixty-eight thousand, eight hundred twenty-nine".