494437751 has 4 divisors (see below), whose sum is σ = 494535504. Its totient is φ = 494340000.

The previous prime is 494437721. The next prime is 494437763. The reversal of 494437751 is 157734494.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 494437751 - 2¹⁸ = 494175607 is a prime.

It is a super-2 number, since 2×494437751² = 488937379227876002, 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 (494437711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40850 + ... + 51551.

It is an arithmetic number, because the mean of its divisors is an integer number (123633876).

Almost surely, 2^494437751 is an apocalyptic number.

494437751 is a deficient number, since it is larger than the sum of its proper divisors (97753).

494437751 is an equidigital number, since it uses as much as digits as its factorization.

494437751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97752.

The product of its digits is 423360, while the sum is 44.

The square root of 494437751 is about 22235.9562645729. The cubic root of 494437751 is about 790.7463709498.

The spelling of 494437751 in words is "four hundred ninety-four million, four hundred thirty-seven thousand, seven hundred fifty-one".