3902021201 has 8 divisors (see below), whose sum is σ = 4202948904. Its totient is φ = 3601203840.

The previous prime is 3902021183. The next prime is 3902021213. The reversal of 3902021201 is 1021202093.

It can be written as a sum of positive squares in 4 ways, for example, as 355699600 + 3546321601 = 18860^2 + 59551^2 .

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

It is not a de Polignac number, because 3902021201 - 2¹⁴ = 3902004817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3902021261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55055 + ... + 104091.

It is an arithmetic number, because the mean of its divisors is an integer number (525368613).

Almost surely, 2^3902021201 is an apocalyptic number.

It is an amenable number.

3902021201 is a deficient number, since it is larger than the sum of its proper divisors (300927703).

3902021201 is a wasteful number, since it uses less digits than its factorization.

3902021201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55171.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 3902021201 is about 62466.1604470773. The cubic root of 3902021201 is about 1574.3327921910.

Adding to 3902021201 its reverse (1021202093), we get a palindrome (4923223294).

The spelling of 3902021201 in words is "three billion, nine hundred two million, twenty-one thousand, two hundred one".