494734391 has 4 divisors (see below), whose sum is σ = 523836432. Its totient is φ = 465632352.

The previous prime is 494734381. The next prime is 494734397. The reversal of 494734391 is 193437494.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 193437494 = 2 ⋅96718747.

It is a cyclic number.

It is not a de Polignac number, because 494734391 - 2¹⁰ = 494733367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494734397) 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, 14550995 + ... + 14551028.

It is an arithmetic number, because the mean of its divisors is an integer number (130959108).

Almost surely, 2^494734391 is an apocalyptic number.

494734391 is a deficient number, since it is larger than the sum of its proper divisors (29102041).

494734391 is a wasteful number, since it uses less digits than its factorization.

494734391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29102040.

The product of its digits is 326592, while the sum is 44.

The square root of 494734391 is about 22242.6255419633. The cubic root of 494734391 is about 790.9044765346.

The spelling of 494734391 in words is "four hundred ninety-four million, seven hundred thirty-four thousand, three hundred ninety-one".