299345785921 has 16 divisors (see below), whose sum is σ = 368879959168. Its totient is φ = 236552918400.

The previous prime is 299345785861. The next prime is 299345785957. The reversal of 299345785921 is 129587543992.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 299345785921 - 2²¹ = 299343688769 is a prime.

It is a super-2 number, since 2×299345785921² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (299345785721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1954260 + ... + 2101861.

It is an arithmetic number, because the mean of its divisors is an integer number (23054997448).

Almost surely, 2^299345785921 is an apocalyptic number.

It is an amenable number.

299345785921 is a deficient number, since it is larger than the sum of its proper divisors (69534173247).

299345785921 is a wasteful number, since it uses less digits than its factorization.

299345785921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4056952.

The product of its digits is 48988800, while the sum is 64.

The spelling of 299345785921 in words is "two hundred ninety-nine billion, three hundred forty-five million, seven hundred eighty-five thousand, nine hundred twenty-one".