384480731 has 2 divisors, whose sum is σ = 384480732. Its totient is φ = 384480730.

The previous prime is 384480683. The next prime is 384480737. The reversal of 384480731 is 137084483.

It is a strong prime.

It is an emirp because it is prime and its reverse (137084483) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 384480731 - 2¹⁸ = 384218587 is a prime.

It is a super-2 number, since 2×384480731² = 295650865020588722, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (384480737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192240365 + 192240366.

It is an arithmetic number, because the mean of its divisors is an integer number (192240366).

Almost surely, 2^384480731 is an apocalyptic number.

384480731 is a deficient number, since it is larger than the sum of its proper divisors (1).

384480731 is an equidigital number, since it uses as much as digits as its factorization.

384480731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 384480731 is about 19608.1802062303. The cubic root of 384480731 is about 727.1514252999.

The spelling of 384480731 in words is "three hundred eighty-four million, four hundred eighty thousand, seven hundred thirty-one".