424999999 has 4 divisors (see below), whose sum is σ = 447368440. Its totient is φ = 402631560.

The previous prime is 424999969. The next prime is 425000033. The reversal of 424999999 is 999999424.

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 424999999 - 2¹³ = 424991807 is a prime.

It is a Duffinian number.

424999999 is a modest number, since divided by 99999 gives 4249 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 424999999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424999969) 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, 11184192 + ... + 11184229.

It is an arithmetic number, because the mean of its divisors is an integer number (111842110).

Almost surely, 2^424999999 is an apocalyptic number.

424999999 is a deficient number, since it is larger than the sum of its proper divisors (22368441).

424999999 is a wasteful number, since it uses less digits than its factorization.

424999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22368440.

The product of its digits is 17006112, while the sum is 64.

The square root of 424999999 is about 20615.5281038347. The cubic root of 424999999 is about 751.8472975128.

The spelling of 424999999 in words is "four hundred twenty-four million, nine hundred ninety-nine thousand, nine hundred ninety-nine".