84299391 has 24 divisors (see below), whose sum is σ = 133133520. Its totient is φ = 50976000.

The previous prime is 84299389. The next prime is 84299419. The reversal of 84299391 is 19399248.

It is not a de Polignac number, because 84299391 - 2¹ = 84299389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84299381) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69591 + ... + 70791.

It is an arithmetic number, because the mean of its divisors is an integer number (5547230).

Almost surely, 2^84299391 is an apocalyptic number.

84299391 is a deficient number, since it is larger than the sum of its proper divisors (48834129).

84299391 is a wasteful number, since it uses less digits than its factorization.

84299391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1927 (or 1924 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 84299391 is about 9181.4699803463. The cubic root of 84299391 is about 438.4716099896.

The spelling of 84299391 in words is "eighty-four million, two hundred ninety-nine thousand, three hundred ninety-one".