149971722 has 32 divisors (see below), whose sum is σ = 318235392. Its totient is φ = 46953984.

The previous prime is 149971709. The next prime is 149971741. The reversal of 149971722 is 227179941.

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, 61743 + ... + 64125.

It is an arithmetic number, because the mean of its divisors is an integer number (9944856).

Almost surely, 2^149971722 is an apocalyptic number.

149971722 is an abundant number, since it is smaller than the sum of its proper divisors (168263670).

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

149971722 is a wasteful number, since it uses less digits than its factorization.

149971722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3022.

The product of its digits is 63504, while the sum is 42.

The square root of 149971722 is about 12246.2942149860. The cubic root of 149971722 is about 531.2958937607.

The spelling of 149971722 in words is "one hundred forty-nine million, nine hundred seventy-one thousand, seven hundred twenty-two".