149000000 has 98 divisors (see below), whose sum is σ = 372065550. Its totient is φ = 59200000.

The previous prime is 148999993. The next prime is 149000017. The reversal of 149000000 is 941.

It can be written as a sum of positive squares in 7 ways, for example, as 139806976 + 9193024 = 11824^2 + 3032^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 999926 + ... + 1000074.

Almost surely, 2^149000000 is an apocalyptic number.

149000000 is a gapful number since it is divisible by the number (10) 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 149000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186032775).

149000000 is an abundant number, since it is smaller than the sum of its proper divisors (223065550).

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

149000000 is an frugal number, since it uses more digits than its factorization.

149000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 149000000 is about 12206.5556157337. Note that the first 3 decimals coincide. The cubic root of 149000000 is about 530.1459192381.

Adding to 149000000 its reverse (941), we get a palindrome (149000941).

The spelling of 149000000 in words is "one hundred forty-nine million", and thus it is an aban number.