84250247 has 4 divisors (see below), whose sum is σ = 84270096. Its totient is φ = 84230400.

The previous prime is 84250213. The next prime is 84250253. The reversal of 84250247 is 74205248.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84250247 - 2¹⁰ = 84249223 is a prime.

It is a super-2 number, since 2×84250247² = 14196208239122018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84250267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 698 + ... + 12999.

It is an arithmetic number, because the mean of its divisors is an integer number (21067524).

Almost surely, 2^84250247 is an apocalyptic number.

84250247 is a deficient number, since it is larger than the sum of its proper divisors (19849).

84250247 is a wasteful number, since it uses less digits than its factorization.

84250247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19848.

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 84250247 is about 9178.7933302804. The cubic root of 84250247 is about 438.3863881897.

The spelling of 84250247 in words is "eighty-four million, two hundred fifty thousand, two hundred forty-seven".