149971406 has 16 divisors (see below), whose sum is σ = 242509344. Its totient is φ = 69146784.

The previous prime is 149971387. The next prime is 149971411. The reversal of 149971406 is 604179941.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 29831 + ... + 34493.

It is an arithmetic number, because the mean of its divisors is an integer number (15156834).

Almost surely, 2^149971406 is an apocalyptic number.

149971406 is a deficient number, since it is larger than the sum of its proper divisors (92537938).

149971406 is a wasteful number, since it uses less digits than its factorization.

149971406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5915.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 149971406 is about 12246.2813131171. The cubic root of 149971406 is about 531.2955206023.

The spelling of 149971406 in words is "one hundred forty-nine million, nine hundred seventy-one thousand, four hundred six".