3897028837 has 4 divisors (see below), whose sum is σ = 4196800300. Its totient is φ = 3597257376.

The previous prime is 3897028799. The next prime is 3897028871. The reversal of 3897028837 is 7388207983.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1651121956 + 2245906881 = 40634^2 + 47391^2 .

It is a cyclic number.

It is not a de Polignac number, because 3897028837 - 2¹⁵ = 3896996069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3897028637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149885712 + ... + 149885737.

It is an arithmetic number, because the mean of its divisors is an integer number (1049200075).

Almost surely, 2^3897028837 is an apocalyptic number.

It is an amenable number.

3897028837 is a deficient number, since it is larger than the sum of its proper divisors (299771463).

3897028837 is a wasteful number, since it uses less digits than its factorization.

3897028837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299771462.

The product of its (nonzero) digits is 4064256, while the sum is 55.

The square root of 3897028837 is about 62426.1871092573. The cubic root of 3897028837 is about 1573.6610893059.

The spelling of 3897028837 in words is "three billion, eight hundred ninety-seven million, twenty-eight thousand, eight hundred thirty-seven".