149998812 has 12 divisors (see below), whose sum is σ = 349997256. Its totient is φ = 49999600.

The previous prime is 149998781. The next prime is 149998813. The reversal of 149998812 is 218899941.

149998812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×149998812² = 44999287202822688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149998813) 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, 6249939 + ... + 6249962.

It is an arithmetic number, because the mean of its divisors is an integer number (29166438).

Almost surely, 2^149998812 is an apocalyptic number.

149998812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

149998812 is an abundant number, since it is smaller than the sum of its proper divisors (199998444).

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

149998812 is a wasteful number, since it uses less digits than its factorization.

149998812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12499908 (or 12499906 counting only the distinct ones).

The product of its digits is 373248, while the sum is 51.

The square root of 149998812 is about 12247.4002139230. The cubic root of 149998812 is about 531.3278818783.

The spelling of 149998812 in words is "one hundred forty-nine million, nine hundred ninety-eight thousand, eight hundred twelve".