149447756 has 12 divisors (see below), whose sum is σ = 263978568. Its totient is φ = 74025312.

The previous prime is 149447741. The next prime is 149447777. The reversal of 149447756 is 657744941.

It is a self number, because there is not a number n which added to its sum of digits gives 149447756.

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 3 ways as a sum of consecutive naturals, for example, 174161 + ... + 175016.

It is an arithmetic number, because the mean of its divisors is an integer number (21998214).

Almost surely, 2^149447756 is an apocalyptic number.

It is an amenable number.

149447756 is a deficient number, since it is larger than the sum of its proper divisors (114530812).

149447756 is a wasteful number, since it uses less digits than its factorization.

149447756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349288 (or 349286 counting only the distinct ones).

The product of its digits is 846720, while the sum is 47.

The square root of 149447756 is about 12224.8826579236. The cubic root of 149447756 is about 530.6764307256.

The spelling of 149447756 in words is "one hundred forty-nine million, four hundred forty-seven thousand, seven hundred fifty-six".