985420839731 has 8 divisors (see below), whose sum is σ = 989135798784. Its totient is φ = 981706460040.

The previous prime is 985420839727. The next prime is 985420839769. The reversal of 985420839731 is 137938024589.

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

It is a cyclic number.

It is not a de Polignac number, because 985420839731 - 2² = 985420839727 is a prime.

It is a super-2 number, since 2×985420839731² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (985420839721) 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, 3429050 + ... + 3705296.

It is an arithmetic number, because the mean of its divisors is an integer number (123641974848).

Almost surely, 2^985420839731 is an apocalyptic number.

985420839731 is a deficient number, since it is larger than the sum of its proper divisors (3714959053).

985420839731 is a wasteful number, since it uses less digits than its factorization.

985420839731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289681.

The product of its (nonzero) digits is 13063680, while the sum is 59.

The spelling of 985420839731 in words is "nine hundred eighty-five billion, four hundred twenty million, eight hundred thirty-nine thousand, seven hundred thirty-one".