491514421 has 8 divisors (see below), whose sum is σ = 530247384. Its totient is φ = 453872640.

The previous prime is 491514407. The next prime is 491514431. The reversal of 491514421 is 124415194.

It can be written as a sum of positive squares in 4 ways, for example, as 239816196 + 251698225 = 15486^2 + 15865^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 491514421 - 2¹⁷ = 491383349 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 (491514431) 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 7 ways as a sum of consecutive naturals, for example, 271860 + ... + 273661.

It is an arithmetic number, because the mean of its divisors is an integer number (66280923).

Almost surely, 2^491514421 is an apocalyptic number.

It is an amenable number.

491514421 is a deficient number, since it is larger than the sum of its proper divisors (38732963).

491514421 is a wasteful number, since it uses less digits than its factorization.

491514421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545591.

The product of its digits is 5760, while the sum is 31.

The square root of 491514421 is about 22170.1245147608. The cubic root of 491514421 is about 789.1848778810.

The spelling of 491514421 in words is "four hundred ninety-one million, five hundred fourteen thousand, four hundred twenty-one".