3897005476 has 81 divisors (see below), whose sum is σ = 8615494881. Its totient is φ = 1541672496.

The previous prime is 3897005473. The next prime is 3897005521. The reversal of 3897005476 is 6745007983.

It is a happy number.

The square root of 3897005476 is 62426.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 576480100 + 3320525376 = 24010^2 + 57624^2 .

It is a Harshad number since it is a multiple of its sum of digits (49).

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 26 ways as a sum of consecutive naturals, for example, 299769646 + ... + 299769658.

Almost surely, 2^3897005476 is an apocalyptic number.

3897005476 is the 62426-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3897005476

3897005476 is an abundant number, since it is smaller than the sum of its proper divisors (4718489405).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3897005476 is an frugal number, since it uses more digits than its factorization.

3897005476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86 (or 22 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 49.

The cubic root of 3897005476 is about 1573.6579448274.

Multiplying 3897005476 by its sum of digits (49), we get a square (190953268324 = 436982²).

3897005476 divided by its sum of digits (49) gives a square (79530724 = 8918²).

The spelling of 3897005476 in words is "three billion, eight hundred ninety-seven million, five thousand, four hundred seventy-six".