84249999 has 12 divisors (see below), whose sum is σ = 124983976. Its totient is φ = 54648432.

The previous prime is 84249953. The next prime is 84250003. The reversal of 84249999 is 99994248.

It is not a de Polignac number, because 84249999 - 2⁷ = 84249871 is a prime.

It is a Duffinian number.

84249999 is a modest number, since divided by 9999 gives 8424 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84249929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 126169 + ... + 126834.

Almost surely, 2^84249999 is an apocalyptic number.

84249999 is a deficient number, since it is larger than the sum of its proper divisors (40733977).

84249999 is a wasteful number, since it uses less digits than its factorization.

84249999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253046 (or 253043 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The square root of 84249999 is about 9178.7798208694. The cubic root of 84249999 is about 438.3859580429.

The spelling of 84249999 in words is "eighty-four million, two hundred forty-nine thousand, nine hundred ninety-nine".