494069687 has 4 divisors (see below), whose sum is σ = 504581856. Its totient is φ = 483557520.

The previous prime is 494069677. The next prime is 494069689. The reversal of 494069687 is 786960494.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 786960494 = 2 ⋅393480247.

It is a cyclic number.

It is not a de Polignac number, because 494069687 - 2⁸ = 494069431 is a prime.

It is a super-2 number, since 2×494069687² = 488209711224555938, 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 (494069689) 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, 5256014 + ... + 5256107.

It is an arithmetic number, because the mean of its divisors is an integer number (126145464).

Almost surely, 2^494069687 is an apocalyptic number.

494069687 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

494069687 is a deficient number, since it is larger than the sum of its proper divisors (10512169).

494069687 is a wasteful number, since it uses less digits than its factorization.

494069687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10512168.

The product of its (nonzero) digits is 2612736, while the sum is 53.

The square root of 494069687 is about 22227.6783987892. The cubic root of 494069687 is about 790.5501092900.

The spelling of 494069687 in words is "four hundred ninety-four million, sixty-nine thousand, six hundred eighty-seven".