382429721 has 4 divisors (see below), whose sum is σ = 387037392. Its totient is φ = 377822052.

The previous prime is 382429687. The next prime is 382429759. The reversal of 382429721 is 127924283.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 127924283 = 19 ⋅6732857.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-382429721 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (382429121) 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, 2303711 + ... + 2303876.

It is an arithmetic number, because the mean of its divisors is an integer number (96759348).

Almost surely, 2^382429721 is an apocalyptic number.

It is an amenable number.

382429721 is a deficient number, since it is larger than the sum of its proper divisors (4607671).

382429721 is an equidigital number, since it uses as much as digits as its factorization.

382429721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4607670.

The product of its digits is 48384, while the sum is 38.

The square root of 382429721 is about 19555.8104153216. The cubic root of 382429721 is about 725.8561244286.

The spelling of 382429721 in words is "three hundred eighty-two million, four hundred twenty-nine thousand, seven hundred twenty-one".