491402626 has 16 divisors (see below), whose sum is σ = 865968768. Its totient is φ = 206182800.

The previous prime is 491402609. The next prime is 491402689. The reversal of 491402626 is 626204194.

It is a junction number, because it is equal to n+sod(n) for n = 491402591 and 491402600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 858810 + ... + 859381.

It is an arithmetic number, because the mean of its divisors is an integer number (54123048).

Almost surely, 2^491402626 is an apocalyptic number.

491402626 is a deficient number, since it is larger than the sum of its proper divisors (374566142).

491402626 is a wasteful number, since it uses less digits than its factorization.

491402626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1718217.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 491402626 is about 22167.6030729531. The cubic root of 491402626 is about 789.1250399531.

The spelling of 491402626 in words is "four hundred ninety-one million, four hundred two thousand, six hundred twenty-six".