494079109 has 4 divisors (see below), whose sum is σ = 523142604. Its totient is φ = 465015616.

The previous prime is 494079101. The next prime is 494079121. The reversal of 494079109 is 901970494.

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

It can be written as a sum of positive squares in 2 ways, for example, as 432016225 + 62062884 = 20785^2 + 7878^2 .

It is a cyclic number.

It is not a de Polignac number, because 494079109 - 2³ = 494079101 is a prime.

It is a super-2 number, since 2×494079109² = 488228331900467762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494079101) 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, 14531722 + ... + 14531755.

It is an arithmetic number, because the mean of its divisors is an integer number (130785651).

Almost surely, 2^494079109 is an apocalyptic number.

It is an amenable number.

494079109 is a deficient number, since it is larger than the sum of its proper divisors (29063495).

494079109 is a wasteful number, since it uses less digits than its factorization.

494079109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29063494.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 494079109 is about 22227.8903407408. The cubic root of 494079109 is about 790.5551345701. Note that the first 3 decimals are identical.

The spelling of 494079109 in words is "four hundred ninety-four million, seventy-nine thousand, one hundred nine".