299147940 has 216 divisors, whose sum is σ = 1137197880. Its totient is φ = 63092736.

The previous prime is 299147911. The next prime is 299147977. The reversal of 299147940 is 49741992.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4064256 + 295083684 = 2016^2 + 17178^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 113356 + ... + 115964.

It is an arithmetic number, because the mean of its divisors is an integer number (5264805).

Almost surely, 2^299147940 is an apocalyptic number.

299147940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 299147940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (568598940).

299147940 is an abundant number, since it is smaller than the sum of its proper divisors (838049940).

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

299147940 is a wasteful number, since it uses less digits than its factorization.

299147940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2651 (or 2639 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 299147940 is about 17295.8937323285. The cubic root of 299147940 is about 668.7985746299.

The spelling of 299147940 in words is "two hundred ninety-nine million, one hundred forty-seven thousand, nine hundred forty".