499406399 has 4 divisors (see below), whose sum is σ = 528783264. Its totient is φ = 470029536.

The previous prime is 499406233. The next prime is 499406437. The reversal of 499406399 is 993604994.

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 499406399 - 2⁸ = 499406143 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 499406399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499406899) 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, 14688407 + ... + 14688440.

It is an arithmetic number, because the mean of its divisors is an integer number (132195816).

Almost surely, 2^499406399 is an apocalyptic number.

499406399 is a deficient number, since it is larger than the sum of its proper divisors (29376865).

499406399 is a wasteful number, since it uses less digits than its factorization.

499406399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29376864.

The product of its (nonzero) digits is 1889568, while the sum is 53.

The square root of 499406399 is about 22347.4025112540. The cubic root of 499406399 is about 793.3863073203.

The spelling of 499406399 in words is "four hundred ninety-nine million, four hundred six thousand, three hundred ninety-nine".