383976997 has 4 divisors (see below), whose sum is σ = 391221900. Its totient is φ = 376732096.

The previous prime is 383976991. The next prime is 383977003. The reversal of 383976997 is 799679383.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (383976991) and next prime (383977003).

It can be written as a sum of positive squares in 2 ways, for example, as 214300321 + 169676676 = 14639^2 + 13026^2 .

It is a cyclic number.

It is not a de Polignac number, because 383976997 - 2⁷ = 383976869 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 (383976991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3622372 + ... + 3622477.

It is an arithmetic number, because the mean of its divisors is an integer number (97805475).

Almost surely, 2^383976997 is an apocalyptic number.

It is an amenable number.

383976997 is a deficient number, since it is larger than the sum of its proper divisors (7244903).

383976997 is an equidigital number, since it uses as much as digits as its factorization.

383976997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7244902.

The product of its digits is 15431472, while the sum is 61.

The square root of 383976997 is about 19595.3310000112. The cubic root of 383976997 is about 726.8337232232.

The spelling of 383976997 in words is "three hundred eighty-three million, nine hundred seventy-six thousand, nine hundred ninety-seven".