149743944 has 128 divisors (see below), whose sum is σ = 480748800. Its totient is φ = 42301440.

The previous prime is 149743943. The next prime is 149743987. The reversal of 149743944 is 449347941.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 149743944.

It is not an unprimeable number, because it can be changed into a prime (149743943) 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 31 ways as a sum of consecutive naturals, for example, 146154 + ... + 147174.

It is an arithmetic number, because the mean of its divisors is an integer number (3755850).

Almost surely, 2^149743944 is an apocalyptic number.

149743944 is a gapful number since it is divisible by the number (14) 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 149743944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240374400).

149743944 is an abundant number, since it is smaller than the sum of its proper divisors (331004856).

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

149743944 is a wasteful number, since it uses less digits than its factorization.

149743944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140 (or 1130 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 149743944 is about 12236.9908065668. The cubic root of 149743944 is about 531.0267789489.

The spelling of 149743944 in words is "one hundred forty-nine million, seven hundred forty-three thousand, nine hundred forty-four".