3897005477 has 8 divisors (see below), whose sum is σ = 3920225400. Its totient is φ = 3873804480.

The previous prime is 3897005473. The next prime is 3897005521. The reversal of 3897005477 is 7745007983.

3897005477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 62426²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 3897005476 = 1^2 + 62426^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3897005477 - 2² = 3897005473 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 (3897005473) 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, 821003 + ... + 825735.

It is an arithmetic number, because the mean of its divisors is an integer number (490028175).

Almost surely, 2^3897005477 is an apocalyptic number.

It is an amenable number.

3897005477 is a deficient number, since it is larger than the sum of its proper divisors (23219923).

3897005477 is a wasteful number, since it uses less digits than its factorization.

3897005477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9463.

The product of its (nonzero) digits is 1481760, while the sum is 50.

The square root of 3897005477 is about 62426.0000080095. Note that the first 5 decimals coincide. The cubic root of 3897005477 is about 1573.6579449620.

The spelling of 3897005477 in words is "three billion, eight hundred ninety-seven million, five thousand, four hundred seventy-seven".