3921048785 has 8 divisors (see below), whose sum is σ = 4709069736. Its totient is φ = 3134298240.

The previous prime is 3921048779. The next prime is 3921048799. The reversal of 3921048785 is 5878401293.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1990676689 + 1930372096 = 44617^2 + 43936^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3921048785 - 2¹⁰ = 3921047761 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 310796 + ... + 323165.

It is an arithmetic number, because the mean of its divisors is an integer number (588633717).

Almost surely, 2^3921048785 is an apocalyptic number.

It is an amenable number.

3921048785 is a deficient number, since it is larger than the sum of its proper divisors (788020951).

3921048785 is a wasteful number, since it uses less digits than its factorization.

3921048785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635203.

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 3921048785 is about 62618.2783618330. The cubic root of 3921048785 is about 1576.8876381636.

The spelling of 3921048785 in words is "three billion, nine hundred twenty-one million, forty-eight thousand, seven hundred eighty-five".