3897478827 has 12 divisors (see below), whose sum is σ = 6141481944. Its totient is φ = 2362108320.

The previous prime is 3897478801. The next prime is 3897478829. The reversal of 3897478827 is 7288747983.

3897478827 is a `hidden beast` number, since 3 + 89 + 7 + 478 + 82 + 7 = 666.

It is not a de Polignac number, because 3897478827 - 2¹⁶ = 3897413291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3897478829) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19684138 + ... + 19684335.

It is an arithmetic number, because the mean of its divisors is an integer number (511790162).

Almost surely, 2^3897478827 is an apocalyptic number.

3897478827 is a deficient number, since it is larger than the sum of its proper divisors (2244003117).

3897478827 is a wasteful number, since it uses less digits than its factorization.

3897478827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39368490 (or 39368487 counting only the distinct ones).

The product of its digits is 37933056, while the sum is 63.

The square root of 3897478827 is about 62429.7911817747. The cubic root of 3897478827 is about 1573.7216572008.

The spelling of 3897478827 in words is "three billion, eight hundred ninety-seven million, four hundred seventy-eight thousand, eight hundred twenty-seven".