149147784 has 64 divisors (see below), whose sum is σ = 417638400. Its totient is φ = 49315392.

The previous prime is 149147773. The next prime is 149147807. The reversal of 149147784 is 487741941.

It is a happy number.

149147784 is a `hidden beast` number, since 14 + 91 + 477 + 84 = 666.

It is a super-2 number, since 2×149147784² = 44490122944221312, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 24714 + ... + 30150.

It is an arithmetic number, because the mean of its divisors is an integer number (6525600).

Almost surely, 2^149147784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149147784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208819200).

149147784 is an abundant number, since it is smaller than the sum of its proper divisors (268490616).

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

149147784 is a wasteful number, since it uses less digits than its factorization.

149147784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5579 (or 5569 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 149147784 is about 12212.6075839683. The cubic root of 149147784 is about 530.3211344422.

The spelling of 149147784 in words is "one hundred forty-nine million, one hundred forty-seven thousand, seven hundred eighty-four".