149447844 has 216 divisors, whose sum is σ = 499611840. Its totient is φ = 37340352.

The previous prime is 149447819. The next prime is 149447887. The reversal of 149447844 is 448744941.

It is a self number, because there is not a number n which added to its sum of digits gives 149447844.

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 71 ways as a sum of consecutive naturals, for example, 7865667 + ... + 7865685.

Almost surely, 2^149447844 is an apocalyptic number.

149447844 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 149447844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249805920).

149447844 is an abundant number, since it is smaller than the sum of its proper divisors (350163996).

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

149447844 is a wasteful number, since it uses less digits than its factorization.

149447844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77 (or 44 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The square root of 149447844 is about 12224.8862571396. The cubic root of 149447844 is about 530.6765348858.

The spelling of 149447844 in words is "one hundred forty-nine million, four hundred forty-seven thousand, eight hundred forty-four".