212004399 has 32 divisors (see below), whose sum is σ = 312548544. Its totient is φ = 127262720.

The previous prime is 212004371. The next prime is 212004427. The reversal of 212004399 is 993400212.

It is an interprime number because it is at equal distance from previous prime (212004371) and next prime (212004427).

It is a cyclic number.

It is not a de Polignac number, because 212004399 - 2¹⁹ = 211480111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212004599) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109867 + ... + 111779.

It is an arithmetic number, because the mean of its divisors is an integer number (9767142).

Almost surely, 2^212004399 is an apocalyptic number.

212004399 is a deficient number, since it is larger than the sum of its proper divisors (100544145).

212004399 is a wasteful number, since it uses less digits than its factorization.

212004399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2027.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 212004399 is about 14560.3708400576. The cubic root of 212004399 is about 596.2773199688.

The spelling of 212004399 in words is "two hundred twelve million, four thousand, three hundred ninety-nine".