149931446 has 16 divisors (see below), whose sum is σ = 257629344. Its totient is φ = 64105344.

The previous prime is 149931443. The next prime is 149931499. The reversal of 149931446 is 644139941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149931443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6305 + ... + 18428.

It is an arithmetic number, because the mean of its divisors is an integer number (16101834).

Almost surely, 2^149931446 is an apocalyptic number.

149931446 is a deficient number, since it is larger than the sum of its proper divisors (107697898).

149931446 is a wasteful number, since it uses less digits than its factorization.

149931446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25175.

The product of its digits is 93312, while the sum is 41.

The square root of 149931446 is about 12244.6496887416. The cubic root of 149931446 is about 531.2483283731.

The spelling of 149931446 in words is "one hundred forty-nine million, nine hundred thirty-one thousand, four hundred forty-six".