424000399 has 4 divisors (see below), whose sum is σ = 425650464. Its totient is φ = 422350336.

The previous prime is 424000397. The next prime is 424000411. The reversal of 424000399 is 993000424.

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

It is a cyclic number.

It is not a de Polignac number, because 424000399 - 2¹ = 424000397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 424000399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424000397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 824647 + ... + 825160.

It is an arithmetic number, because the mean of its divisors is an integer number (106412616).

Almost surely, 2^424000399 is an apocalyptic number.

424000399 is a deficient number, since it is larger than the sum of its proper divisors (1650065).

424000399 is a wasteful number, since it uses less digits than its factorization.

424000399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650064.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 424000399 is about 20591.2699705482. The cubic root of 424000399 is about 751.2573864979.

The spelling of 424000399 in words is "four hundred twenty-four million, three hundred ninety-nine", and thus it is an aban number.