84895387731 has 48 divisors (see below), whose sum is σ = 154001323008. Its totient is φ = 43779542400.

The previous prime is 84895387723. The next prime is 84895387799. The reversal of 84895387731 is 13778359848.

84895387731 is a `hidden beast` number, since 8 + 489 + 5 + 3 + 87 + 73 + 1 = 666.

It is not a de Polignac number, because 84895387731 - 2³ = 84895387723 is a prime.

It is a super-2 number, since 2×84895387731² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (84895387531) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 352155 + ... + 542036.

It is an arithmetic number, because the mean of its divisors is an integer number (3208360896).

Almost surely, 2^84895387731 is an apocalyptic number.

84895387731 is a deficient number, since it is larger than the sum of its proper divisors (69105935277).

84895387731 is a wasteful number, since it uses less digits than its factorization.

84895387731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894352 (or 894349 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 63.

The spelling of 84895387731 in words is "eighty-four billion, eight hundred ninety-five million, three hundred eighty-seven thousand, seven hundred thirty-one".