212894999 has 2 divisors, whose sum is σ = 212895000. Its totient is φ = 212894998.

The previous prime is 212894989. The next prime is 212895017. The reversal of 212894999 is 999498212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212894999 - 2⁸ = 212894743 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212894999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212894909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106447499 + 106447500.

It is an arithmetic number, because the mean of its divisors is an integer number (106447500).

Almost surely, 2^212894999 is an apocalyptic number.

212894999 is a deficient number, since it is larger than the sum of its proper divisors (1).

212894999 is an equidigital number, since it uses as much as digits as its factorization.

212894999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 839808, while the sum is 53.

The square root of 212894999 is about 14590.9218009007. The cubic root of 212894999 is about 597.1111119409. Note that the first 6 decimals are identical.

The spelling of 212894999 in words is "two hundred twelve million, eight hundred ninety-four thousand, nine hundred ninety-nine".