149812971 has 32 divisors (see below), whose sum is σ = 250368000. Its totient is φ = 77410080.

The previous prime is 149812939. The next prime is 149812981. The reversal of 149812971 is 179218941.

It is not a de Polignac number, because 149812971 - 2⁵ = 149812939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149812931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44340 + ... + 47598.

It is an arithmetic number, because the mean of its divisors is an integer number (7824000).

Almost surely, 2^149812971 is an apocalyptic number.

149812971 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

149812971 is a deficient number, since it is larger than the sum of its proper divisors (100555029).

149812971 is a wasteful number, since it uses less digits than its factorization.

149812971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3479.

The product of its digits is 36288, while the sum is 42.

The square root of 149812971 is about 12239.8109054021. The cubic root of 149812971 is about 531.1083616686.

The spelling of 149812971 in words is "one hundred forty-nine million, eight hundred twelve thousand, nine hundred seventy-one".