149439252 has 24 divisors (see below), whose sum is σ = 351036000. Its totient is φ = 49478176.

The previous prime is 149439247. The next prime is 149439253. The reversal of 149439252 is 252934941.

It is a self number, because there is not a number n which added to its sum of digits gives 149439252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149439253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40002 + ... + 43577.

It is an arithmetic number, because the mean of its divisors is an integer number (14626500).

Almost surely, 2^149439252 is an apocalyptic number.

149439252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

149439252 is an abundant number, since it is smaller than the sum of its proper divisors (201596748).

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

149439252 is a wasteful number, since it uses less digits than its factorization.

149439252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83735 (or 83733 counting only the distinct ones).

The product of its digits is 77760, while the sum is 39.

The square root of 149439252 is about 12224.5348377760. The cubic root of 149439252 is about 530.6663648714. Note that the first 3 decimals are identical.

The spelling of 149439252 in words is "one hundred forty-nine million, four hundred thirty-nine thousand, two hundred fifty-two".