299149136 has 80 divisors (see below), whose sum is σ = 721078848. Its totient is φ = 118118400.

The previous prime is 299149127. The next prime is 299149139. The reversal of 299149136 is 631941992.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (299149139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35051 + ... + 42741.

Almost surely, 2^299149136 is an apocalyptic number.

299149136 is a gapful number since it is divisible by the number (26) 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 299149136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (360539424).

299149136 is an abundant number, since it is smaller than the sum of its proper divisors (421929712).

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

299149136 is a wasteful number, since it uses less digits than its factorization.

299149136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7740 (or 7734 counting only the distinct ones).

The product of its digits is 104976, while the sum is 44.

The square root of 299149136 is about 17295.9283069744. The cubic root of 299149136 is about 668.7994659192.

The spelling of 299149136 in words is "two hundred ninety-nine million, one hundred forty-nine thousand, one hundred thirty-six".