85739439090 has 16 divisors (see below), whose sum is σ = 205774653888. Its totient is φ = 22863850416.

The previous prime is 85739439059. The next prime is 85739439113. The reversal of 85739439090 is 9093493758.

It is a self number, because there is not a number n which added to its sum of digits gives 85739439090.

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, 1428990622 + ... + 1428990681.

It is an arithmetic number, because the mean of its divisors is an integer number (12860915868).

Almost surely, 2^85739439090 is an apocalyptic number.

85739439090 is an abundant number, since it is smaller than the sum of its proper divisors (120035214798).

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

85739439090 is a wasteful number, since it uses less digits than its factorization.

85739439090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2857981313.

The product of its (nonzero) digits is 7348320, while the sum is 57.

The spelling of 85739439090 in words is "eighty-five billion, seven hundred thirty-nine million, four hundred thirty-nine thousand, ninety".