84909996 has 72 divisors (see below), whose sum is σ = 219810864. Its totient is φ = 27630720.

The previous prime is 84909983. The next prime is 84910009. The reversal of 84909996 is 69990948.

It is a happy number.

84909996 is a nontrivial binomial coefficient, being equal to C(13032, 2).

It is an interprime number because it is at equal distance from previous prime (84909983) and next prime (84910009).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 469026 + ... + 469206.

Almost surely, 2^84909996 is an apocalyptic number.

84909996 is the 13031-st triangular number and also the 6516-th hexagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84909996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109905432).

84909996 is an abundant number, since it is smaller than the sum of its proper divisors (134900868).

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

84909996 is a wasteful number, since it uses less digits than its factorization.

84909996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431 (or 426 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 54.

The square root of 84909996 is about 9214.6620122498. The cubic root of 84909996 is about 439.5277232878.

It can be divided in two parts, 84909 and 996, that added together give a triangular number (85905 = T₄₁₄).

The spelling of 84909996 in words is "eighty-four million, nine hundred nine thousand, nine hundred ninety-six".