99020784 has 40 divisors (see below), whose sum is σ = 270853200. Its totient is φ = 31065088.

The previous prime is 99020771. The next prime is 99020797. The reversal of 99020784 is 48702099.

It is an interprime number because it is at equal distance from previous prime (99020771) and next prime (99020797).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59859 + ... + 61490.

It is an arithmetic number, because the mean of its divisors is an integer number (6771330).

Almost surely, 2^99020784 is an apocalyptic number.

It is an amenable number.

99020784 is an abundant number, since it is smaller than the sum of its proper divisors (171832416).

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

99020784 is a wasteful number, since it uses less digits than its factorization.

99020784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121377 (or 121371 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 99020784 is about 9950.9187515525. The cubic root of 99020784 is about 462.6388717626.

The spelling of 99020784 in words is "ninety-nine million, twenty thousand, seven hundred eighty-four".