494007891 has 16 divisors (see below), whose sum is σ = 712056576. Its totient is φ = 302842656.

The previous prime is 494007883. The next prime is 494007911. The reversal of 494007891 is 198700494.

It is not a de Polignac number, because 494007891 - 2³ = 494007883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (494007821) 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, 13825 + ... + 34338.

It is an arithmetic number, because the mean of its divisors is an integer number (44503536).

Almost surely, 2^494007891 is an apocalyptic number.

494007891 is a deficient number, since it is larger than the sum of its proper divisors (218048685).

494007891 is a wasteful number, since it uses less digits than its factorization.

494007891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48442.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 494007891 is about 22226.2882866213. The cubic root of 494007891 is about 790.5171484393.

It can be divided in two parts, 49400 and 7891, that added together give a triangular number (57291 = T₃₃₈).

The spelling of 494007891 in words is "four hundred ninety-four million, seven thousand, eight hundred ninety-one".