214491491 has 16 divisors (see below), whose sum is σ = 228856320. Its totient is φ = 200587200.

The previous prime is 214491427. The next prime is 214491493. The reversal of 214491491 is 194194412.

It is a cyclic number.

It is not a de Polignac number, because 214491491 - 2⁶ = 214491427 is a prime.

It is a super-2 number, since 2×214491491² = 92013199422806162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (214491493) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 356591 + ... + 357191.

It is an arithmetic number, because the mean of its divisors is an integer number (14303520).

Almost surely, 2^214491491 is an apocalyptic number.

214491491 is a deficient number, since it is larger than the sum of its proper divisors (14364829).

214491491 is a wasteful number, since it uses less digits than its factorization.

214491491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946.

The product of its digits is 10368, while the sum is 35.

The square root of 214491491 is about 14645.5280205256. The cubic root of 214491491 is about 598.5999681329.

The spelling of 214491491 in words is "two hundred fourteen million, four hundred ninety-one thousand, four hundred ninety-one".