494779591 has 4 divisors (see below), whose sum is σ = 495882000. Its totient is φ = 493677184.

The previous prime is 494779553. The next prime is 494779613. The reversal of 494779591 is 195977494.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 195977494 = 2 ⋅97988747.

It is a cyclic number.

It is not a de Polignac number, because 494779591 - 2⁷ = 494779463 is a prime.

It is a super-3 number, since 3×494779591³ (a number of 27 digits) contains 333 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 (494779511) 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, 550531 + ... + 551428.

It is an arithmetic number, because the mean of its divisors is an integer number (123970500).

Almost surely, 2^494779591 is an apocalyptic number.

494779591 is a deficient number, since it is larger than the sum of its proper divisors (1102409).

494779591 is a wasteful number, since it uses less digits than its factorization.

494779591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102408.

The product of its digits is 2857680, while the sum is 55.

The square root of 494779591 is about 22243.6415858555. The cubic root of 494779591 is about 790.9285620468.

The spelling of 494779591 in words is "four hundred ninety-four million, seven hundred seventy-nine thousand, five hundred ninety-one".