85429446990 has 16 divisors (see below), whose sum is σ = 205030672848. Its totient is φ = 22781185856.

The previous prime is 85429446989. The next prime is 85429447043. The reversal of 85429446990 is 9964492458.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1423824087 + ... + 1423824146.

It is an arithmetic number, because the mean of its divisors is an integer number (12814417053).

Almost surely, 2^85429446990 is an apocalyptic number.

85429446990 is an abundant number, since it is smaller than the sum of its proper divisors (119601225858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85429446990 is a wasteful number, since it uses less digits than its factorization.

85429446990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2847648243.

The product of its (nonzero) digits is 22394880, while the sum is 60.

The spelling of 85429446990 in words is "eighty-five billion, four hundred twenty-nine million, four hundred forty-six thousand, nine hundred ninety".