147949445 has 32 divisors (see below), whose sum is σ = 212958720. Its totient is φ = 96526080.

The previous prime is 147949441. The next prime is 147949457. The reversal of 147949445 is 544949741.

It is a happy number.

It is not a de Polignac number, because 147949445 - 2² = 147949441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 147949445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147949441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71039 + ... + 73091.

It is an arithmetic number, because the mean of its divisors is an integer number (6654960).

Almost surely, 2^147949445 is an apocalyptic number.

It is an amenable number.

147949445 is a deficient number, since it is larger than the sum of its proper divisors (65009275).

147949445 is a wasteful number, since it uses less digits than its factorization.

147949445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2165.

The product of its digits is 725760, while the sum is 47.

The square root of 147949445 is about 12163.4470854277. The cubic root of 147949445 is about 528.8970119562.

The spelling of 147949445 in words is "one hundred forty-seven million, nine hundred forty-nine thousand, four hundred forty-five".