2999406820 has 12 divisors (see below), whose sum is σ = 6298754364. Its totient is φ = 1199762720.

The previous prime is 2999406791. The next prime is 2999406827. The reversal of 2999406820 is 286049992.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1131784164 + 1867622656 = 33642^2 + 43216^2 .

It is not an unprimeable number, because it can be changed into a prime (2999406827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74985151 + ... + 74985190.

It is an arithmetic number, because the mean of its divisors is an integer number (524896197).

Almost surely, 2^2999406820 is an apocalyptic number.

2999406820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2999406820 is an abundant number, since it is smaller than the sum of its proper divisors (3299347544).

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

2999406820 is a wasteful number, since it uses less digits than its factorization.

2999406820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149970350 (or 149970348 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 49.

The square root of 2999406820 is about 54766.8405150416. The cubic root of 2999406820 is about 1442.1545069749.

The spelling of 2999406820 in words is "two billion, nine hundred ninety-nine million, four hundred six thousand, eight hundred twenty".