212498905 has 8 divisors (see below), whose sum is σ = 260929152. Its totient is φ = 166045488.

The previous prime is 212498903. The next prime is 212498911. The reversal of 212498905 is 509894212.

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 212498905 - 2¹ = 212498903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212498903) 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, 493969 + ... + 494398.

It is an arithmetic number, because the mean of its divisors is an integer number (32616144).

Almost surely, 2^212498905 is an apocalyptic number.

It is an amenable number.

212498905 is a deficient number, since it is larger than the sum of its proper divisors (48430247).

212498905 is an equidigital number, since it uses as much as digits as its factorization.

212498905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988415.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 212498905 is about 14577.3421788747. The cubic root of 212498905 is about 596.7405709705.

The spelling of 212498905 in words is "two hundred twelve million, four hundred ninety-eight thousand, nine hundred five".