499209451 has 16 divisors (see below), whose sum is σ = 559944000. Its totient is φ = 441883008.

The previous prime is 499209413. The next prime is 499209467. The reversal of 499209451 is 154902994.

It is a cyclic number.

It is not a de Polignac number, because 499209451 - 2⁹ = 499208939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 499209398 and 499209407.

It is not an unprimeable number, because it can be changed into a prime (499209751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51730 + ... + 60616.

It is an arithmetic number, because the mean of its divisors is an integer number (34996500).

Almost surely, 2^499209451 is an apocalyptic number.

499209451 is a deficient number, since it is larger than the sum of its proper divisors (60734549).

499209451 is a wasteful number, since it uses less digits than its factorization.

499209451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9078.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 499209451 is about 22342.9955690816. The cubic root of 499209451 is about 793.2819992245.

The spelling of 499209451 in words is "four hundred ninety-nine million, two hundred nine thousand, four hundred fifty-one".