3946471257 has 8 divisors (see below), whose sum is σ = 5263859520. Its totient is φ = 2630031920.

The previous prime is 3946471241. The next prime is 3946471289. The reversal of 3946471257 is 7521746493.

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 3946471257 - 2⁴ = 3946471241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3946471297) 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, 227469 + ... + 244202.

It is an arithmetic number, because the mean of its divisors is an integer number (657982440).

Almost surely, 2^3946471257 is an apocalyptic number.

It is an amenable number.

3946471257 is a deficient number, since it is larger than the sum of its proper divisors (1317388263).

3946471257 is a wasteful number, since it uses less digits than its factorization.

3946471257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474463.

The product of its digits is 1270080, while the sum is 48.

The square root of 3946471257 is about 62820.9460052935. The cubic root of 3946471257 is about 1580.2882635130.

The spelling of 3946471257 in words is "three billion, nine hundred forty-six million, four hundred seventy-one thousand, two hundred fifty-seven".