84697138404 has 120 divisors (see below), whose sum is σ = 237408272640. Its totient is φ = 26235166464.

The previous prime is 84697138397. The next prime is 84697138411. The reversal of 84697138404 is 40483179648.

84697138404 is a `hidden beast` number, since 8 + 469 + 7 + 138 + 40 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (84697138397) and next prime (84697138411).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 337809 + ... + 532455.

It is an arithmetic number, because the mean of its divisors is an integer number (1978402272).

Almost surely, 2^84697138404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84697138404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118704136320).

84697138404 is an abundant number, since it is smaller than the sum of its proper divisors (152711134236).

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

84697138404 is a wasteful number, since it uses less digits than its factorization.

84697138404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194759 (or 194748 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 84697138404 in words is "eighty-four billion, six hundred ninety-seven million, one hundred thirty-eight thousand, four hundred four".