494661979 has 16 divisors (see below), whose sum is σ = 596332800. Its totient is φ = 400836384.

The previous prime is 494661967. The next prime is 494661997. The reversal of 494661979 is 979166494.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 494661979 - 2¹³ = 494653787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (494665979) 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, 64044 + ... + 71350.

It is an arithmetic number, because the mean of its divisors is an integer number (37270800).

Almost surely, 2^494661979 is an apocalyptic number.

494661979 is a deficient number, since it is larger than the sum of its proper divisors (101670821).

494661979 is a wasteful number, since it uses less digits than its factorization.

494661979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7842.

The product of its digits is 2939328, while the sum is 55.

The square root of 494661979 is about 22240.9977069375. The cubic root of 494661979 is about 790.8658876335.

The spelling of 494661979 in words is "four hundred ninety-four million, six hundred sixty-one thousand, nine hundred seventy-nine".