498909986 has 8 divisors (see below), whose sum is σ = 752164380. Its totient is φ = 248188528.

The previous prime is 498909979. The next prime is 498909991. The reversal of 498909986 is 689909894.

It can be written as a sum of positive squares in 2 ways, for example, as 465049225 + 33860761 = 21565^2 + 5819^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×498909986² = 497822348261040392, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 632741 + ... + 633528.

Almost surely, 2^498909986 is an apocalyptic number.

498909986 is a deficient number, since it is larger than the sum of its proper divisors (253254394).

498909986 is a wasteful number, since it uses less digits than its factorization.

498909986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1266468.

The product of its (nonzero) digits is 10077696, while the sum is 62.

The square root of 498909986 is about 22336.2930227914. The cubic root of 498909986 is about 793.1233432324.

The spelling of 498909986 in words is "four hundred ninety-eight million, nine hundred nine thousand, nine hundred eighty-six".