3869221045 has 8 divisors (see below), whose sum is σ = 4756311000. Its totient is φ = 3019879680.

The previous prime is 3869220991. The next prime is 3869221051. The reversal of 3869221045 is 5401229683.

It can be written as a sum of positive squares in 4 ways, for example, as 21003889 + 3848217156 = 4583^2 + 62034^2 .

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

It is not a de Polignac number, because 3869221045 - 2²⁵ = 3835666613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3869220989 and 3869221007.

It is a congruent 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, 9436920 + ... + 9437329.

It is an arithmetic number, because the mean of its divisors is an integer number (594538875).

Almost surely, 2^3869221045 is an apocalyptic number.

It is an amenable number.

3869221045 is a deficient number, since it is larger than the sum of its proper divisors (887089955).

3869221045 is a wasteful number, since it uses less digits than its factorization.

3869221045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18874295.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 3869221045 is about 62203.0629872838. The cubic root of 3869221045 is about 1569.9091249279.

The spelling of 3869221045 in words is "three billion, eight hundred sixty-nine million, two hundred twenty-one thousand, forty-five".