212469491 has 8 divisors (see below), whose sum is σ = 228971904. Its totient is φ = 195989760.

The previous prime is 212469487. The next prime is 212469581. The reversal of 212469491 is 194964212.

212469491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 212469491 - 2² = 212469487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212469391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17246 + ... + 26876.

It is an arithmetic number, because the mean of its divisors is an integer number (28621488).

Almost surely, 2^212469491 is an apocalyptic number.

212469491 is a deficient number, since it is larger than the sum of its proper divisors (16502413).

212469491 is a wasteful number, since it uses less digits than its factorization.

212469491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11341.

The product of its digits is 31104, while the sum is 38.

The square root of 212469491 is about 14576.3332494836. Note that the first 3 decimals coincide. The cubic root of 212469491 is about 596.7130361822.

The spelling of 212469491 in words is "two hundred twelve million, four hundred sixty-nine thousand, four hundred ninety-one".