84012899 has 2 divisors, whose sum is σ = 84012900. Its totient is φ = 84012898.

The previous prime is 84012893. The next prime is 84012919. The reversal of 84012899 is 99821048.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84012899 is a prime.

It is not a weakly prime, because it can be changed into another prime (84012893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42006449 + 42006450.

It is an arithmetic number, because the mean of its divisors is an integer number (42006450).

Almost surely, 2^84012899 is an apocalyptic number.

84012899 is a deficient number, since it is larger than the sum of its proper divisors (1).

84012899 is an equidigital number, since it uses as much as digits as its factorization.

84012899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 84012899 is about 9165.8550610404. The cubic root of 84012899 is about 437.9743300705.

The spelling of 84012899 in words is "eighty-four million, twelve thousand, eight hundred ninety-nine".