84899999391 has 8 divisors (see below), whose sum is σ = 113515320960. Its totient is φ = 56442338712.

The previous prime is 84899999357. The next prime is 84899999441. The reversal of 84899999391 is 19399999848.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 84899999391 - 2⁷ = 84899999263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84899999311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39413965 + ... + 39416118.

It is an arithmetic number, because the mean of its divisors is an integer number (14189415120).

Almost surely, 2^84899999391 is an apocalyptic number.

84899999391 is a deficient number, since it is larger than the sum of its proper divisors (28615321569).

84899999391 is a wasteful number, since it uses less digits than its factorization.

84899999391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78830445.

The product of its digits is 408146688, while the sum is 78.

The spelling of 84899999391 in words is "eighty-four billion, eight hundred ninety-nine million, nine hundred ninety-nine thousand, three hundred ninety-one".