84390992389 has 8 divisors (see below), whose sum is σ = 92068873632. Its totient is φ = 76714106640.

The previous prime is 84390992359. The next prime is 84390992431. The reversal of 84390992389 is 98329909348.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84390992389 is a prime.

It is a super-3 number, since 3×84390992389³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84390992389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84390992359) 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, 65754 + ... + 416059.

It is an arithmetic number, because the mean of its divisors is an integer number (11508609204).

Almost surely, 2^84390992389 is an apocalyptic number.

It is an amenable number.

84390992389 is a deficient number, since it is larger than the sum of its proper divisors (7677881243).

84390992389 is a wasteful number, since it uses less digits than its factorization.

84390992389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497747.

The product of its (nonzero) digits is 30233088, while the sum is 64.

The spelling of 84390992389 in words is "eighty-four billion, three hundred ninety million, nine hundred ninety-two thousand, three hundred eighty-nine".