383964671 has 4 divisors (see below), whose sum is σ = 384535872. Its totient is φ = 383393472.

The previous prime is 383964641. The next prime is 383964689. The reversal of 383964671 is 176469383.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 176469383 = 53 ⋅3329611.

It is a cyclic number.

It is not a de Polignac number, because 383964671 - 2¹⁴ = 383948287 is a prime.

It is a super-2 number, since 2×383964671² = 294857737152276482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (383964641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284591 + ... + 285936.

It is an arithmetic number, because the mean of its divisors is an integer number (96133968).

Almost surely, 2^383964671 is an apocalyptic number.

383964671 is a deficient number, since it is larger than the sum of its proper divisors (571201).

383964671 is an equidigital number, since it uses as much as digits as its factorization.

383964671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571200.

The product of its digits is 653184, while the sum is 47.

The square root of 383964671 is about 19595.0164837900. The cubic root of 383964671 is about 726.8259458057.

The spelling of 383964671 in words is "three hundred eighty-three million, nine hundred sixty-four thousand, six hundred seventy-one".